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

2 . 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.

3 . 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

4 . 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

5 . 路是湿的。昨晚一定下雨了。(must have done)
The road is wet. ________ .

6 . —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

8 . He________ it all by himself for there was no one else in the house to turn to for help.

A．must be doing	B．should be doing
C．must have done	D．should have done

10 . --- Few of the students passed the maths quiz this time in our school.
---Really? It ________ difficult.

A．should be

B．might be

C．must have been

D．could have been..