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    5．A．cleaning B．clean C．cleans D．cleanning 【查看更多】

     

    题目列表(包括答案和解析)

    —What a clean (干净的) room it is today!
    —Oh, yes! Who _____ it?
    [     ]
    A. is cleaning        
    B. will clean            
    C. has cleaned      
    D. had cleaned  

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    —What a nice classroom!

             —It _____ every day.

    A.is cleaning      B.has cleaned   C.must clean     D.is cleaned

     

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    Our classroom   _______   by us every day!

    A.is cleaning  B.has cleaned C.must clean D.is cleaned

     

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    It’s hard to keep the house       with three kids.

          A. cleaning     B. to clean     C. cleaned     D. clean

     

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    Our classroom          by us every day!

    A. is cleaning  B. has cleaned C. must clean D. is cleaned

     

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