1. I can not go to the stadium with them last night, I must revise the gram¬
mar rules for the test.
2. I live a long way from the Institute and I must get up early.
3. All of us have to be in time for classes.
4. When we have our French lessons, we must to stay at the office after
work.
5. He can not stay at the office on Monday and Friday and must get home early.
6. Should you work hard to do well at the Institute?
7. Can they discuss this problem right now? No, they must not do it next time.
8. I'm glad you can stay yesterday.
9. Will you have to have lunch with me tomorrow?
10. Please send them this telegram. Oh, should I do it now?
11. The students may go out now.
12. He have to earn extra money after work.