Choose the correct verbs to rewrite the sentences with the same meaning.
1. It is necessary for you to phone Martin. (must/might)
2. It is possible that Ann will be here this evening. (can/might)
3. It is not necessary for you to wait. (mustn't/don't have to)
4. It is not good for people to watch TV all the time (mustn't/shouldn't)
5. Do you want me to open a window? (shall/will)
6. It is important for people to cooperate. (may/should)
7. John smoked when he was younger. (can/may)
8. It is possible that it will rain. (can/may)
9. Alan knows how to speak Spanish. (can/could)
10. I would like you to help me. (can/could)