Workbook Grammar Reference Answer Key
Unit 1
LESSON 2
1.Have. ever: haven't 2.never
3.Has. ever: has 4. never
LESSON 4
1. for
4. since
2. for
5. for
3.since
Unit 2
LESSON 2
1.has visited
4. traveled
2.has taken
5. slept
3. went
LESSON 4
1. just
3. already
2.yet
4.yet
Unit 3
LESSON 2
1. The boys were kicking a ball.
2. What was she listening to?
3. I was making dinner.
4. Was he playing chess?
5. Were your friends walking to the store?
LESSON 4
1. was listening. Came
2. were you doing. Called
3. were playing. Started
4. was reading, fell
Unit 5
LESSON 2
1. is as old as
2. is the most expensive
3. isn't as slow as
4. is faster than
LESSON 4
1. not fast enough
2. enough milk
3. too tired
4. strong enough
Unit 6
LESSON 2
2. she used to play the violin
3. she used to walk to school
4.she used to eat pizza for lunch
LESSON 4
1. Who did you use to play with whenyou were five?
2.She didn't use to like candy when she was younger.
3. Did they use to take the bus to school?
4. Where did your friends use to go on vacation?
Unit 7
LESSON2
1.I think it'll snow tomorrow.
2.They won't build a new library in our town.
3.Will you learn the guitar next year? Yes, l will.
4. Where will we go on vacation in the future?
5. Will it rain tomorrow? No, it won't.
6.Sara thinks she’ll be very tiredtomorrow morning.
LESSON 4
1. are you doing
2. 'm meeting
3. 're playing
4.'m not going
5.are coming
6.'re taking
Unit 8
LESSON 2
1. 's going to send an e-mail
2. isn't going to finish
3.'s going to go to the circus
4.isn't going to fix
LESSON 4
1. 're going to be tired
2. 'm going to be hungry
3. aren't going to enjoy
4. 's going to catch
5. isn't going to catch
Unit 9
LESSON 2
1. lose, 'll be
2. won't win, doesn't run
3.don't leave, 'll be
4. 'll eat, 's/is
LESSON 4
1. will we stay if we visit
2.we see a snake, what will we
3. you swim in the lake if it's very hot
4. our teacher isn't at school tomorrow, who will teach
Unit 10
LESSON 2
1. won't
2. may
3.could
4.will
LESSON 4
1.had to go
2.don't have to clean
3. didn't have to run
4. have to listen
Unit 11
LESSON 2
1. Math is taught by Mr.Brown.
2. Rugs are sold in this store.
3. ltalian is spoken in ltaly.4.The cat is fed by my brother.
LESSON 4
1.Are pencils made on farms?
2. Pencils are made in factories. They aren't made on farms.
3. Is science taught by musicteachers?
4. Science is taught by science teachers. lt isn't taught by musicteachers.
Unit 12
LESSON 2
1. My necklace was made in Mexico.
2.This picture was painted by my uncle.
3.Computers weren't used in the 1880s.
4.Velcro was invented by George de Mestral.
5. Hamlet wasn't written by Charles Dickens.
6.The Giza Pyramids were builtthousands of years ago.
LESSON 4
1. Who was the television invented by?
2. Were these flowers planted by your dad?
3. When was the Sistine Chapel painted?
4. Where were these shoes made?
5. Was this photograph takenyesterday?
