问题描述:
It’s a rule in our school that the classroom _________ every day.
A.should clean B.should be cleaned C.should cleaned D.should be cleaning
.A.should clean B.should be cleaned C.should cleaned D.should be cleaning
A.should clean B.should be cleaned C.should cleaned D.should be cleaning
.A.should clean B.should be cleaned C.should cleaned D.should be cleaning
问题解答:
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