Modal Auxiliary Verbs

Some Sentences..............

1. You should look at me when I am talking to you.
2. If you don’t start working harder, you will have to repeat the course next year.
3. Phone her now. She must be home by now.
4. You mustn’t forget your sun cream. It’s going to be very hot!
5. I might be able to help you, but I’m not sure yet.
6. May I take a photograph of you?
7. Students are allowed to borrow up to 6 books at any time
8. Whose is this bag? - I don’t know, but it may belong to Yuta.
9. His excuse may be true, but I don’t believe.
10. It’s very important to be able to speak more than one language.
11. I don’t like having to get up early on a Sunday.
12. Could you help me move this table? (Both answers are possible. Choose the more polite request.)
13. I could talk already before I was two years old.
14. I couldn’t move the table. It was too heavy.
15. You shouldn’t eat so much chocolate. It’s not good for you.
16. 
    
17. I’m afraid I can’t play tennis tomorrow. I’ve got a dentist appointment.