6 . He________, for he is upset today.
他肯定是受到了惩罚，因为他今天很不高兴。

7 . 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.

8 . Since the road is wet this morning, it________ last night.

A．must rain	B．must be raining
C．must have rained	D．must have been rained

9 . The city at one time________ prosperous, for it enjoyed a high level of civilization.

A．may be

B．may have been

C．must be

D．must have been

10 . —Hello, John. How are you feeling now? I hear you've been ill.
—They ________ me with my twin brother Rod. He's been sick all week, but I've never felt better in my life.

A．must confuse	B．may can
C．could have confused	D．must have confused