Grammar reference Modal verbs p. 177 - Answer key
- Ex. 1:
1. must be / should go / could be
2. should've talked / might've seen
3. may have been murdered / won't know / can't stop
4. shouldn´t have been playing / could' ve been killed / Shall I take / can play
5. can´t be / must have / could probably tell
6. won't say / should tell / could get
- Ex. 2:
1. That must've been painful
2. He should've stopped smoking earlier
3. It can't be hard to do
4. Given the resources, they couldn't have done any more to help
5. It can't have been cheap
6. He shouldn't have been taking those pills
7. You may / might / could need...
8. He must've been lying
9. She might've / may have / could've picked up the cold from my son
10. She should make a complete recovery after the operation
