Odpowiedzi:

Modal verbs in exercises 4 and 5:

1. mustn't
2. shouldn't/should
3. could
4. must
5. may,
6. need to,
7. can't.

Other modal verbs:

1. ought to
2. have to
3. would
4. had better
5. shall
6. needn't
7. will
8. can

Modal verbs differ from