Complete the sentences using the modal verbs: (must, should, would, ought to, have to, needn't, can, could, may)
1. They ... not do this work themselves
2. You ... take my dictionary.
3. You don't look well, you ... consult the doctor.
4. Why ... I give you my money?
5. She ... not speak any foreign language.
6. He ... to help them, they need his help.
7. ... you tell me the time?
8. ... I go with you? No, you ....
9. Your daughter ... have told about it.
10. In winter we ... often skate.
11. You ... not miss your classes.
12. ... you play the piano before?