题目内容
It's a rule in my class that our classroom ________ before 6:00 p. m.every day.
[ ]
A. be able to clean
B. should be cleaning
C. must clean
D. must be cleaned
B. should be cleaning
C. must clean
D. must be cleaned
D
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It’s a rule in my class that our classroom ______ before 6:00 p.m. every day.
A.be able to clean | B.should be cleaning |
C.must clean | D.must be cleaned |