Solutions to exercises in ST's Book pp 34 and 35

34.1.
1. aren't able to
2. must / should
3. needn't
4. can
5. must / should
6. must not
7. may / can

34.4 (suggested answers)
1. I'll be able to play the piano
2. he must be a good player
3. I should practice more often
4. needn't / don't have to / don't need to go to work
5. must pay taxes
6. I may go to Salou
7. mustn't use their mobile phone
8. Can I use yours?

34.5
1. must have felt
2. couldn't have played
3. would have paid
4. shouldn't have been
5. might have left
6. could have taken

34.6
1. You should have written them
2. We shouldn't have played so much
3. You could have brought a big car
4. They must have thought the concert was later
5. They might have been bored
6. The concert can't have been good

35. 7
1. couldn't play
2. would / could have given
3. must be
4. should have continued
5. needn't / don't have to bring
6. couldn't have done
7. may / might go
8. might not have / should have learnt

35.8
1. Could I use your iPad?
2. You shouldn't have sold your piano
3. You don't have to help me
4. Jennifer might have forgotten her phone
5. You can't be serious / I can't believe you are serious
6. We weren't able to finish the project yesterday
7. You could have solved the problem
8. Tom must have been very excited about the concert

35.9
1. couldn't
2. have to
3. must have been
4. may have felt
5. should have
6. were able to
7- wouldn't have happened