1. The roof and streets are wet. It must (to rain). 2. He must (to be) very unobservant if he didn’t notice the change in him.
3. She must (to read) a very funny story; she’s laughing.
4. Could he (to receive) the news with indifference!
5. She can’t (to fail) to notice you. We are too close!
6. It’s more than I can (to put) up with.
7. We’d better drop the subject. She may not (to get) over the shock yet.
8. I may (to sit) thus an hour or so, I lost all sense of time.
9. You might (to punish) him somehow to make him realize his guilt.
10. You should (to be) more polite. You offended him.
11. You needn’t (to cross) the street. You wasted time.
12. He may (to stay) at his relatives now.
13. They must (to work) at the problem for a month or so.
14. He could (to translate) the text but he didn’t want to do it.
15. She may (to lose) my address and now she can’t (to write) to me.
16. He must (to know) about it. But if it’s true, why didn’t he tell me?
17. You shouldn’t (to ask) her about it. She disliked your question.
18. I needn’t (to tell) you a word about that. Now when you betrayed me, I understand you’ve never loved me.
19. The professor must (to displease) with the answer, as he asked the same question once more.
20. He couldn’t (to betray) me! He seemed so good!
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