The windows must _________ before you leave the room.A.be closed B.are closedC.c
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The windows must _________ before you leave the room.A.be closed | B.are closed | C.close | D.be close |
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答案
A |
解析
考察时态。句意:在你离开房间之前,不许关上窗户。结合语境可知本句主语为动作对象,故用被动语态。选A。 |
举一反三
when you want to talk to your teacher ,you should _ _first.A.called to her | B.called up her | C.call her up | D.called her up | The river smells terrible. People_______ dirty things into it .A.must stop to throw | B.must stop from throwing | C.must be stopped to throw | D.must be stopped from throwing |
| In order to make Chongqing more beautiful, lots of trees _____ on both sides of the street.A.should build | B.have built | C.must be built | D.will build |
| The world has a big headache and it _______ by money. It began in America last year.A.cause | B.causes | C.is caused | D.are caused |
| Our classroom _____ every day, so it’s very clean. A. cleans B. is cleaned C is cleaning. D. cleaned |
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