1 . If someone happens to have high fever and pneumonia, he or she _________ seek treatment fast.

A．must

B．needs

C．may

D．could

2 . Timmy, why        in the mud? I have already told you so many times not to!

A．must you sit

B．should you sit

C．will you sit

D．can you sit

3 . But grocery store bread ________ stay fresh during long shipping and storage times. So companies often put a chemical preservative in it. (用适当的词填空)

4 . Students can’t wear jumpers, jackets or coats indoors. Also, girls and boys ______wear black leather shoes and black socks. Sports shoes are not allowed. (用适当的词填空)

5 . Just as I was hurrying to class, there ________ come Tom with a long story to tell you.

A．could

B．must

C．might

D．would

6 . 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

7 . In the new TOFEL test, there are questions ________ test takers ________ read, listen and then speak into a microphone.

A．which … must	B．which … need
C．where … must `	D．where … need

8 . 你必须好好保管我的书，否则我下次不借给你。（汉译英）

9 . 因为出乎意料的暴力事件频发，出租车公司必须向乘客确保出行的安全。（assure）(汉译英）

10 . 选词填空

well off;   be keen on;   be ashamed of;   in all ;     on behalf of ;   refer to

1. They would never _________ that matter again.
2. You should _________ yourself for telling such lies.
3. In addition, a hero must be optimistic and diligent and_________ his hard work.
4. It won't be long before the Chinese people will become _________.
5. Please allow me to thank you for your offer of help _________ my colleagues.