—The pollution problem here seems to get more and more serious.--Yes. Something_
题型：不详难度：来源：
—The pollution problem here seems to get more and more serious.
--Yes. Something_____about it.| A．must do | B．must be done | | C．is doing | D．had been done |
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答案
| B |
解析
| 考查时态及语态.句意:这儿的污染问题单好像越来越严重.——是的，对此必须做些什么。下文主语是动作对象，故用被动语态，结合语境可知选B。 |
举一反三
--Excuse me，Mr. Li,_________ I close windows? It’s cold now.
--Yes，you__________| A．can; can"t | B．can; may | C．may; can’t | D．may; can |
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- You’d better because you have to drive back home.
- OK.| A．not drinking | B．not to drink | C．not drink | D．don’t drink |
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—Be quite, the head teacher Mr. Qian is coming.
—Don’t worry. It _____ be him. Mr Qian is much fatter.| A．mustn’t | B．may not | C．needn’t | D．can’t |
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- Must I clean the Lable now?
- No, you ____. You may do it later.| A．can’t | B．needn’t | C．mustn’t | D．shouldn’t |
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She can hardly write her own name, ______?| A．can she | B．can"t she | C．need she | D．needn"t she |
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