The classroom        every day.A.should cleanB.should be cleanedC.should cleane

The classroom        every day.A.should cleanB.should be cleanedC.should cleane

题型:不详难度:来源:
The classroom        every day.
A.should clean
B.should be cleaned
C.should cleaned
D.should be cleaning

答案
B
解析
由题意可知用被动语态。
举一反三
— At present, one of the best ways to study is working in groups.
—More chances _______ to students to learn from each other.
A.offerB.is offered
C.are offeredD.have offered

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They are looking forward to _____________ to the lecture by the famous professor.
A.sendB.be sentC.being sentD.sending

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----Bad luck! It’s too late!
----It doesn’t matter. The movie  _______for only a few minutes. You can’t miss it.
A.has been onB.has begun
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—Oh, my God!  I can’t find my key to the office.
—Don’t worry.  Perhaps it______________ in your home.
A. left          B. has left       C. was left
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A.be madeB.be made toC.makeD.make to

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