PAG. 42-43

ES. A

1 Can’t

2 Should

3 Could

4 Can

5 Can

6 Have to

ES. B

1 You should go to the dentist

2 They can’t be at home

3 He may not come

4 You don’t need to take any warm clothes

5 Should have packed earlier

6 Might have overslept

ES. C

1 Can’t have won the price

2 May have lost her keys

3 Must have rented a house in the suburb

4 Needn’t have done the wash

ES. D

1 Oughtn’t to have

2 Had

3 Must

4 Didn’t have to

5 Was able to

6 Needn’t have

7 Could have

ES. E

1 Must

2 Cannot

3 Might

4 Needn’t

5 Have to

6 Used to

7 Should