GRAMMAR IN CONTEXT 1
ANSWER KEY
UNIT 1 STUDENT LIFE
Be: Present
Reading 1
COMPREHENSION page 5
1. T 2. F 3. T
THINK ABOUT IT page 5
1. Answers will vary.
2. Possible answer: Yes, because they can earn money to pay for their college classes.
1.1 Be—Present Forms
EXERCISE 1 page 5
1. NS 2. F 3. T
EXERCISE 2 pages 5–6
1. is 2. am 3. am 4. is 5. are 6. is 7. is 8. is
9. are 10. is 11. are 12. are 13. are 14. are 15. am
1.2 Be—Uses
EXERCISE 3 page 6
1. is 2. am 3. is 4. are 5. is 6. are 7. are 8. are 9. is 10. is
EXERCISE 4 page 7
1. d 2. a 3. h 4. c 5. b 6. e 7. g 8. f
1. Trains and buses are forms of transportation.
2. My community college is in Chicago.
3. Some adult education classes are free.
4. ESL students are from many different countries.
5. Tuition is the cost of college courses. 6. I am an ESL student.
7. Spanish is the language of Mexico.
8. It is hot in Guatemala in the summer.
EXERCISE 5 page 7
Answers will vary.
1.3 Subject Pronouns and Nouns
EXERCISE 6 pages 8–9
1. They 2.We 3. It 4. It 5. They 6. I 7. It 8. They 9. It 10.You 11. She 12. We
EXERCISE 7 page 9
1. My college is a two-year college. 2. I am a student. 3. My parents are in Guatemala. 4. A four-year college is expensive. 5. My college is convenient for me. 6. My teacher is 40 years old. 7. My teacher is from New York. 8. My class is eight weeks long. 9. Rolando is married. 10. It is cold in the winter./In the winter, it is cold.
1.4 Contractions with Be
EXERCISE 8 pages 10–11
1. ’m 2. ’s 3. ’m 4. ’s 5. ’s 6. ’s 7. ’s
8. ’s 9. ’s 10. ’m 11. ’s 12. ’re 13. ’s 14. ’re
EXERCISE 9 page 11
1. ’s 2. ’re 3. ’s 4. is 5. ’m 6. ’s 7. ’s 8. is 9. is 10. ’s 11. is
EXERCISE 10 page 11
1. ’m 2. ’m 3. ’s 4. ’s 5. is 6. ’s 7. is 8. are 9. ’re 10. are 11. ’s 12. ’s 13. are 14. ’re 15. is
1.5 Be + Adjective Descriptions
ABOUT YOU page 12
Answers will vary.
EXERCISE 11 pages 12–13
Answers will vary.
1.6 Be + (Adjective +) Noun Descriptions
EXERCISE 12 page 13
1. are 2. is a 3. is an/’s an 4. is an/’s an 5. are 6. are a/’re a 7. am an/’m an 8. are 9. is a/’s a
ABOUT YOU page 14
Answers will vary.
1.7 Negative Statements with Be
EXERCISE 13 page 15
1. It isn’t/It’s not, It isn’t/It’s not
2. We aren’t/We’re not, We aren’t/We’re not
3. It isn’t/It’s not, It isn’t/It’s not 4. I am not/I’m not
5. They aren’t/They’re not, They aren’t/They’re not
6. You aren’t/You’re not, You aren’t/You’re not
7. We aren’t/We’re not, We aren’t/We’re not
ABOUT YOU pages 15–16
Answers will vary.
Reading 2
COMPREHENSION page 18
1. F 2. F 3. T
THINK ABOUT IT page 18
1. Answers will vary.
2. Possible answer: Because their parents want more
control over what they learn.
1.8 Yes/No Questions and Short Answers
with Be
EXERCISE 14 pages 18–19
1. ’s 2. ’m 3. ’s 4. Are you 5. I’m not 6. Are you 7. I am
8. Are we 9. are 10. Is 11. she isn’t/she’s not 12. Is it
13. is 14. It’s
EXERCISE 15 page 19
Answers to the questions will vary.
1. Is the school big? 2. Is it near public transportation? 3. Is the cafeteria on the first floor? 4. Is it open now? 5. Is the library closed now? 6. Is the course free? 7. Are the textbooks free? 8. Is the teacher American? 9. Is the classroom clean? 10. Is it big? 11. Are you a freshman?
1.9 Wh- Questions with Be
EXERCISE 16 page 20
1. What’s 2. Who’s 3. When’s 4.What 5. Where are 6. Where’s 7. What’s 8.Why isn’t he
EXERCISE 17 page 21
1. are you 2. Are you 3. I am 4. What time is it 5. aren’t you 6. How’s 7. Is it 8. it is 9. They’re 10. How old is he 11. Where’s he 12. Where are Mom and Dad 13. They’re 14. are they 15. It’s 16. What’s 17. I’m
ABOUT YOU page 22
1. Answers will vary. Where are you from?
2. Answers will vary. What’s your name?
3. Answers will vary. How big’s your family?
4. Answers will vary. Who’s the president/prime minister of your country?
5. Answers will vary. What color’s the flag from your country?
6. Answers will vary. Where’s your country?
7. Answers will vary. How tall are you?
8. Answers will vary. When’s your birthday?
9. Answers will vary. What’s your favorite subject (in school)?
10. Answers will vary. What time is it in your hometown?
EXERCISE 18 page 22
Answers will vary.
EXERCISE 19 page 23
1. are you/’re you 2. Is today/Is it 3. is 4. aren’t you
5. long is/long’s 6. is your English class/’s your English class
7. are they 8. Is 9. is 10. What time is it 11. Are you 12. are you
1.10 Prepositions of Place
ABOUT YOU page 25
Answers will vary.
Reading 3
COMPREHENSION page 26
1. T 2. F 3. F
THINK ABOUT IT page 27
1. Answers will vary.
2. Possible answer: Yes, because you can practice the types of questions that are on the test.
1.11 This, That, These, Those
EXERCISE 20 page 27
1. this 2. It’s 3. those 4. They’re 5. This 6.Those 7. They’re 8. are 9. that 10. Is it 11. That’s 12. It’s 13. they’re 14. it’s 15. This is
REVIEW page 29
1. It’s 2. I’m 3. are you 4. is/’s 5. Is she 6. she is 7. from
8. She’s/She is 9. Who’s your teacher 10. a very good teacher
11. I’m not 12. aren’t you 13. on 14. next to 15. How big is your class 16. That’s 17. class isn’t 18. in 19. are 20. are the students from 21.That’s 22. ’re/are 23. Is Mr. Sanchez American 24. he’s not/he isn’t 25. English isn’t 26. that’s not/that isn’t 27. is 28. Ms. Lee’s/Ms. Lee is 29. old is Mr. Sanchez 30. He’s a young man.
EDITING PRACTICE pages 30–31
1. C 2. I’m/I am 3. C 4. C 5. are you 6. I’m/I am
7. is Rwanda 8. It’s 9. a very small country
10. Is Latvia a city or a country 11. is a country 12. It’s in/It is in
13. C 14. What’s 15. C 16. Are you 17. I am 18. isn’t/is not
19. C 20. C 21. I’m not/I am not 22. C 23. These are
24. teacher is/teacher’s 25. It’s/It is
WRITE page 31
Answers for the rewritten paragraphs will vary.
1. is/’s, answers will vary 2. am/’m 3. am/’m 4. are 5. are/’re
6. are/’re 7. am/’m 8. is 9. is/’s 10. is/’s
11. is/’s 12. is/’s 13. is/’s 14. am/’m 15. am/’m
UNIT 2 PLACES TO VISIT
The Simple Present
Reading 1
COMPREHENSION page 34
1. F 2. F 3. T
THINK ABOUT IT page 35
Answers will vary.
2.1 The Simple Present—Afrmative
Statements
EXERCISE 1 page 35
1. NS 2. F 3. F
EXERCISE 2 pages 35–36
1. plan 2. has 3. want 4. has 5. needs 6. is 7. has 8. need
9. want 10. have 11. visit 12. shows 13. plan 14. has 15. loves
2.2 The Simple Present—Use
EXERCISE 3 page 36
1. like 2. lives 3. work 4. has 5. visit
6. connects 7. need 8. means 9. want
ABOUT YOU page 37
Answers will vary.
2.3 Spelling of the -s Form
EXERCISE 4 page 38
1. eats 2. studies 3. watches 4. tries 5. plays 6. has 7. goes
8. worries 9. wants 10. does 11. pushes 12. enjoys 13. thinks
14. says 15. changes 16. brushes 17. likes 18. reaches 19. fixes
20. raises 21. charges 22. sees
2.4 Pronunciation of the -s Form
EXERCISE 5 page 39
1. eats /s/ 2. studies /z/ 3. watches / z/ 4. tries /z/ 5. plays /z/
6. has /z/ 7. goes /z/ 8. worries /z/ 9. wants /s/ 10. does /z/
11. pushes / z/ 12. enjoys /z/ 13. thinks /s/ 14. says /z/
15. changes / z/ 16. brushes / z/ 17. likes /s/ 18. reaches / z/
19. fixes / z/ 20. raises / z/ 21. charges / z/ 22. see /z/
EXERCISE 6 page 39
1. likes 2. want 3. enjoys 4. prefer 5. wants 6. get 7. takes
EXERCISE 7 page 39
Answers will vary.
2.5 The Simple Present—Negative
Statements
EXERCISE 8 page 40
1. do not need/don’t need 2. does not have/doesn’t have
3. does not run/doesn’t run 4. do not need/don’t need
5. does not have/doesn’t have 6. does not live/doesn’t live
7. do not like/don’t like 8. does not live/doesn’t live
9. does not serve/doesn’t serve 10. do not have/don’t have
11. does not make/doesn’t make
ABOUT YOU pages 40–41
Answers will vary. Possible answers:
1. My hometown has a zoo./My hometown does not have a
zoo./My hometown doesn’t have a zoo.
2. My hometown gets a lot of rain./My hometown does not
get a lot of rain./My hometown doesn’t get a lot of rain.
3. My hometown is modern./My hometown’s modern./My
hometown is not modern./My hometown isn’t modern./
My hometown’s not modern.
4. My hometown has very tall buildings./My hometown does not have very tall buildings./My hometown doesn’t have very tall buildings.
5. My hometown has more than a million people./My
hometown does not have more than a million people./
My hometown doesn’t have more than a million people.
6. My hometown is the capital of my country./My hometown’s the capital of my country./My hometown is not the capital of my country./My hometown isn’t the capital of my country./My hometown’s not the capital of my country.
7. My hometown has government buildings./My hometown does not have government buildings./My hometown doesn’t have government buildings.
8. My hometown attracts a lot of tourists./My hometown does not attract a lot of tourists./My hometown doesn’t attract a lot of tourists.
9. My hometown has a subway./My hometown does not
have a subway./My hometown doesn’t have a subway.
10. My hometown has an airport./My hometown does not
have an airport./My hometown doesn’t have an airport.
EXERCISE 9 page 41
1. is 2. lives 3. works 4. doesn’t live 5. has 6. doesn’t use
7. takes 8. doesn’t work 9. is/’s 10. leads 11. don’t need
12. need 13. is/’s 14. has 15. work 16. go 17. are
18. don’t have
Reading 2
COMPREHENSION page 42
1. F 2. T 3. F
THINK ABOUT IT page 43
1. Answers will vary.
2. Possible answer: They are protected areas of the United
States that anyone can enjoy.
2.6 The Simple Present – Yes/No Questions
and Short Answers
EXERCISE 10 pages 43–44
1. Yes, she does. 2. No, she does not./No, she doesn’t.
3. No, she does not./No, she doesn’t. 4. Yes, she does.
5. No, she does not./No, she doesn’t. 6. Yes, they do.
7. No, they do not./No, they don’t. 8. No, they do not./No, they don’t.
EXERCISE 11 page 44
1. Does the United States have 2. does 3. It has
4. Is Grand Canyon National Park 5. is not/isn’t/’s not
6. Do a lot of people visit 7. Do I need 8. do not/don’t
9. Do we need 10. do not/don’t 11. Does this park charge
12. does 13. Do buses go 14. do 15. Do people go
16. Does the helicopter go 17. does 18. Is it 19. is
EXERCISE 12 pages 45–46
1. Is Grand Canyon National Park in California?
No, it is not./No, it isn’t./No, it’s not.
2. Does Yosemite National Park get about 6 million visitors a year?
No, it does not./No, it doesn’t.
3. Does Grand Canyon National Park have black bears? Yes, it does.
4. Do giant sequoia trees grow in Grand Canyon National Park?
No, they do not./No, they don’t.
5. Does Yosemite National Park have waterfalls? Yes, it does.
6. Is the entrance fee for Grand Canyon National Park $35 per car?
Yes, it is.
7. Does Grand Canyon National Park have bicycle trails?
No, it does not./No, it doesn’t.
8. Is Grand Canyon National Park part of the National Park Service?
Yes, it is.
EXERCISE 13 pages 46–47
1. Does Washington, DC, have doesn’t
2. Do the trains run/Do they run don’t
3. Do all passengers pay/Do they pay don’t
4. Do you need do
5. Does the Washington Monument have/Does it have does
6. Does the president work/Does he work doesn’t
7. Does the president make/Does he make doesn’t
8. Does the vice president live doesn’t
9. Is Washington state isn’t/’s not
10. Is the zoo is
2.7 The Simple Present—Wh- Questions
EXERCISE 14 page 48
1. Where do you plan 2. What do you want 3. do they have
4. have 5. What do they show 6. How big is it
7. How long does it take 8. How much does it cost
9. Why don’t they charge 10. pay
EXERCISE 15 page 49
1. do you plan 2. do you want
3. does it get/does Yosemite National Park get
4. does she have/does your wife have
5. doesn’t she like/doesn’t your wife like
6. do you like
EXERCISE 16 pages 49–50
1. How many floors does it have?/How many floors does the museum have?
2. Why don’t we pay to go to the museum?
3. What kind of programs does it have?/What kind of programs does the museum have?
4. What time does it close?/What time does the museum close?
5. How many visitors does it get?/How many visitors does the Grand Canyon get?
6. Where is Grand Canyon National Park?
7. How much money does it charge (for an entrance fee)?/ How much money does Yosemite National Park charge (for an entrance fee)?
8. How many national parks does it have?/How many national parks does the United States have?
EXERCISE 17 page 50
1. do you want 2. don’t you like 3. do you want 4. don’t you like
5. does it have/does the museum have
6. does it close/does the museum close
ABOUT YOU page 51
Answers to the questions will vary.
1. Do you like to travel?
Why do you like to travel?/Why do you like it?/Why don’t
you like to travel?/Why don’t you like it?
2. Do you like museums?
Why do you like museums?/Why do you like them?/Why
don’t you like museums?/Why don’t you like them?
3. Do you like to learn about American history?
Why do you like to learn about American history?/Why
do you like to learn about it?/Why don’t you like to learn
about American history?/Why don’t you like to learn about it?
4. Do you visit parks in the summer?
Why do you visit parks in the summer?/Why do you visit
them in the summer?/Why don’t you visit parks in the
summer?/Why don’t you visit them in the summer?
5. Do you plan to take a vacation?
Why do you plan to take a vacation?/Why do you plan to
take one?/Why don’t you plan to take a vacation?/Why
don’t you plan to take one?
2.8 Questions about Meaning, Spelling,
Cost, and Time
EXERCISE 18 page 51
1. does it cost 2. does it take 3. do you spell
4. does DC mean/does “DC” mean 5. does it cost 6. do you say
EXERCISE 19 page 52
1. are they 2. Does he work
3. does IRS mean/does “IRS” mean/does IRS mean
4. does it take 5. does she live/does your niece live
6. do you spell 7. Does she work/Does your niece work
Reading 3
COMPREHENSION page 54
1. F 2. F 3. T
THINK ABOUT IT page 54
1. Possible answer: Times Square is so popular because it is famous. People see it in movies and magazines and want to see it for themselves.
2. Answers will vary.
2.9 Frequency Words and Expressions with
the Simple Present
ABOUT YOU page 54
Answers will vary.
2.10 Position of Frequency Words and
Expressions
EXERCISE 20 page 55
1. I often travel with my family./Often I travel with my family.
2. Every year my family and I take a vacation in the summer./My family ,and I take a vacation in the summer every year.
3. We are always interested in seeing something new.
4. We often visit major cities, like New York and San Francisco./Often we visit major cities, like New York and San Francisco.
5. We sometimes visit relatives in other cities./Sometimes we visit relatives in other cities./We visit relatives in other cities sometimes.
6. We usually travel by car./Usually we travel by car.
7. We hardly ever fly. 8. We are never bored.
2.11 Questions and Short Answers with Ever
ABOUT YOU page 56
Answers will vary.
2.12 Questions and Answers with How Often
ABOUT YOU page 57
Answers will vary.
EXERCISE 21 pages 57–58
1. you ever 2. rarely 3. Once 4. How 5. Once in a while 6. never
7. It’s sometimes 8. ever 9. never 10. always says 11. ever go
12. do 13. It’s always 14. often get together
2.13 Prepositions of Time
EXERCISE 22 page 59
1. on 2. in 3. in 4. on 5. in 6. on 7. on
ABOUT YOU page 59
Answers will vary.
REVIEW page 61
PART A
1. lives 2. loves 3. does she do 4. goes 5. does she do 6. has
7. like 8. does MOMA mean/does “MOMA” mean/does MOMA mean
9. means 10. does it cost 11. costs 12. pays 13. gets
14. Does your sister have 15. uses
PART B
1. you ever 2. often do 3. in 4. ever 5. on 6. do 7. don’t you
8. like 9. We always 10. often 11. come 12. usually comes
13. in 14. I’m always 15. has 16. cost 17. doesn’t cost 18. has
19. does she do 20. works 21. on
EDITING PRACTICE page 63
1. I 2. C 3. visits 4. C 5. C 6. C 7. I 8. like 9. always want
10. C 11. doesn’t like 12. cries 13. go 14. C 15. don’t you
16. C 17. C 18. C 19. do the tickets cost 20. don’t 21. C
22. C 23. C 24. do not like/don’t like 25. C 26. comes
