1 . 我们必须提高认识并采取行动减少塑料垃圾。（汉译英）
______________________________________________________________________

2 . During the special period of fighting against the infective illness, you ________ wear a mask when going out.

A．must

B．can

C．need

D．may

3 . In order to make our dreams come true, we _______ work hard.

A．must

B．can

C．need

D．may

4 . Waking up suddenly________lead to rapid heart rate and high blood pressure.

A．must

B．would

C．can

D．shall

5 . I asked in the bookshop about Will Dutton’s latest book, but all they           tell me was that it would come out before the end of the year.

A．might

B．must

C．could

D．should

6 . 下列各句均有一处错误，请标出并改正。
1. If my brother was here, everything would be all right.
2. If he hadn’t been caught in the storm yesterday, he will not be ill now.
3. Therefore we strongly suggested that similar events are held every year.
4. The answer sheet must cut from the newspaper and sent to China Daily after the deadline.
5. We must found ways to protect our environment.
6. Some people who don’t like to talk much are not necessarily shy; they must just be quiet people.
7. —It’s the office! So you may know eating is not allowed here.
—Oh, sorry.
8. If you made better use of your time, you might have learned more.
9. Eye doctors recommend that a child’s first eye exam was at the age of six months old.
10. It mustn’ t be the vocabulary that caused you the problem in the exercise because you know a lot of words.

7 . Public health experts kept telling citizens it was of utmost importance that social distancing and hygiene habits ________ amid the pandemic.

A．were to be kept	B．had to be kept
C．must be kept	D．should be kept

8 . 我们的言行必须一致。（corespond, behavior）(汉译英)

9 . 用can或must填空
1. My phone ________have been stolen while I was taking a bus. I can't find it anywhere.
2. I'm hungry. I ________eat two bowls of rice now.
3. You not ________touch other people's head in this country as it will, according to local people, bring had luck to both of you.
4. —Why________ you stay in the countryside where it's not convenient to go shopping?
—Because I've found it beneficial to my health.
5. As far as I am concerned, the air crash ________not have been caused by a bomb attack.
6. You________ not be tired—you've only been working for ten minutes.
7. It is usually warm in my hometown in March, but it________ be rather cold sometimes.
8. Many rare animals are dying out. We________ find ways to protect our environment.

10 . 选词填空must/have to
1. He missed the bus and __________ walk home.
2. You _________ pay the money, but you needn’t do so at once.