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Key to Exercises 30-33

Exercises Unit 30 can and could

UNIT 30
30.1
2  Can you ski?
3  Can you play chess?
4  Can you run ten kilometres?
5  Can you drive (a car)?
6  Can you ride (a horse)?
7  I can/ can’t swim.
8  I can/can’t ski.
9  I can/ can’t play chess.
10  I can/ can’t run ten kilometres.
11  I can/ can’t drive (a car).
12  I can/ can’t ride (a horse).

30.2
2  can see
3  can’t hear
4  can’t find
5  can speak

30.3
2  couldn’t eat
3  can’t decide
4  couldn’t find
5  can’t go
6  couldn’t go

30.4
2  Can/Could you pass the salt (please)?
3  Can/Could I have these postcards (please)?
4  Can/Could you turn off the radio (please)?
5  Can/Could I borrow your newspaper (please)?
6  Can/Could I use your pen (please)?

Exercises Unit 31 must mustn’t don’t need to

UNIT 31
31.1
2  must meet    5  must go
3  must wash    6  must win
4  must learn    7  must be

31.2
2  I must      5  I had to
3  I had to    6  I had to
4  I must      7  I must

31.3
2  don’t need to rush
3  mustn’t lose
4  don’t need to wait
5  mustn’t forget
6 don’t need to phone

31.4
2  C    4  B
3  A    5  D

31.5
3  don’t need
4  had to
5  must
6  mustn’t
7  must
8  had to
9  don’t need
10  mustn’t

Exercises Unit 32 should

UNIT 32
32.1
2  You should go
3  You should eat
4  you should visit
5  you should wear
6  You should take

32.2
2  He shouldn’t eat so much.
3  She shouldn’t work so hard.
4  He shouldn’t drive so fast.

32.3
2  Do you think I should learn (to drive)?
3  Do you think I should get another job?
4  Do you think I should invite Gary (to the party)?

32.4
3  I think you should sell it.
4  I think she should have a holiday.
5  I don’t think they should get married.
6  I don’t think you should go to work.
7  I think he should go to the doctor.
8  I don’t think we should stay there.

32.5
Example answers:
2  I think everybody should have enough food.
3  I think people should drive more carefully.
4  I don’t think the police should carry guns.
5  I think I should take more exercise.

Exercises Unit 33 I have to …

UNIT 33
33.1
2  have to do
3  has to read
4 have to speak
5  has to travel
6  have to hit

33.2
2  have to go
3  had to buy
4  have to change
5  had to answer

33.3
2  did he have to wait
3  does she have to go
4  did you have to pay
5  do you have to do

33.4
2  doesn’t have to wait.
3  didn’t have to get up early.
4  doesn’t have to work (so) hard.
5  don’t have to leave now.

33.5
3  have to pay
4  had to borrow
5  must stop or have to stop (both are correct)
6  has to meet
7  must tell or have to tell (both are correct)

33.6
Example answers:
2  I have to go to work every day.
3  I had to go to the dentist yesterday.
4  I have to go shopping tomorrow.

Key to Exercises 30-33