摘要：5．A．cleaning B．clean C．cleans D．cleanning
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—What a clean (干净的) room it is today!
—Oh, yes! Who _____ it?
—Oh, yes! Who _____ it?
[ ]
A. is cleaning
B. will clean
C. has cleaned
D. had cleaned
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B. will clean
C. has cleaned
D. had cleaned
—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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