Вставьте подходящие модальные глаголы (must, may, can, need, had to, should)

1. You ... not come to help them tomorrow: the work is done.
2. ... you help me now? - I am afraid not.
3. If you want to improve your English, you ... work very hard.
4. It was raining hard. We ... (to wear) our raincoats.
5. I am afraid you will miss that train, you ... take a taxi.
6. Mother, ... I go out with my friends?