1 . 选择适当的情态动词或用所给动词的正确形式填空

must, could, can, might, may, mustn’t, couldn’t, can’t, mightn’t, may not

1. It ________ rain this afternoon. You’d better take a raincoat with you.
2. Betty ________ be in the next room. I can hear her talking there.
3. ---_________he be in the reading room now?
---No, he ________ be in it. I saw him in the office just now.
4. I ________ carry the heavy box. ________ you lend me a hand?
5. You ________ stop your car in the busy street. It is forbidden.
6. I ________ play basketball now, but I _________(not) when I was young.
7. All the students ________ obey the school rules.
8. He ________ (not) go camping with us this weekend. I’m not sure.
9. Her eyes are red. She ________ (be) crying last night.
10. You ________ (see) the famous film Wolf Warrior II as you know so much about the plot.