Question

.
1 Actors must / mustn't learn their lines.
2 Police officers must / mustn't break the law.
3 Surgeons must / mustn't smoke during
operations.
4 A teacher must / mustn't study at university.
5 Lifeguards must / mustn't learn first aid.

Answer 1

Ответ:

1 must

2 mustn't

3 mustn't

4 must

5 must