B) Complete the sentences with must, can’t, may, might, could, and their past forms: 1. Sally appears to be unhappy and

B) Complete the sentences with must, can’t, may, might, could, and their past forms:
1. Sally appears to be unhappy and anxious. She (have) a problem with something.
2. Bob (be) at school because I haven’t seen him today.
3. Mr. Treves hasn’t shown up for work yet. He has never been late for work. He (miss) the bus.
4. Timmy is a very well-behaved boy, so he (break) that window. Someone else (break) it.
5. I’m confident that I left my keys in the car. It (be) there at the moment.
6. The street is wet this morning. I’m not sure, but it (rain) last night.
7. A: I spoke to your science teacher at school yesterday.
B: You (talk) to her because she wasn’t at school yesterday.
8. A: The man was being taken to the hospital. He (have) an accident.
B: Yes, I’m sure he had an accident.
9. A: Will you come to my birthday party tomorrow?
B: I (come) to your party because I have to look after my little sister.
10. A: I’m planning to do a parachute jump next week.
B: You’re going to jump out of an airplane! But you’re 73 years old! You (be) serious. You (be) mad.
A: It really (be) wonderful looking down on everything. I’ve always wanted to try it.
B: But anything could happen. You (be) injured or even killed. I wouldn’t take the risk.
A: Well, your life (be) much more fun if you never take risks. You ought to try it, too. You never know. You (enjoy) it.
B: Enjoy it! You (be) joking.
11. She knew everything about our plans. She (listen) to our conversation.
12. He (eat) the roasted beef when we were out. He is a vegetarian.
13. Mrs. White bought a new fur coat! She (win) a lottery.
14. John said he would call, but he hasn’t. He (forget) all about it.
15. The children (study) in the library now because they have a test tomorrow.
16. The singer has a sore throat, so she (not sing) at the concert.
17. I (be) at home this evening, or I (be) out; I’m not sure.
18. He drank three glasses of water. He (be) very thirsty.
19. A: Where’s the cat?
B: It (go) out; the door is closed.
20. The police arrested him right away. They (find) enough evidence.
21. He had no money, so he (lend) you some.
22. We can’t wait any longer. Something (be done) immediately.
23. They all shouted in fear. They (be) very afraid.
24. A: Your dog bit me while I was standing in the hall.
B: It (not be) my dog. It was with me all day.
25. A: I called you at 9 o’clock this morning and got no answer.
B: I (be) in the garden. I planted some flowers this morning.
26. My grandmother always takes a rest at this time of the day, so she (take) a nap now.
27. Mrs. Green wasn’t good at ice-skating, but she insisted on it and broke her leg. She (give) up doing that.
28. A: I’m afraid Ted is watching TV again.
B: He (watch) TV because his room is completely silent and dark. He (sleep).
29. That carpet was made by hand. It (take) a long time to make it.