阿摩線上測驗
10. Our teacher demanded that the classroom _____________ clean and tidy all the time.
(A) was kept
(B) be kept
(C) keep
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統計： A(38), B(308), C(83), D(14), E(0) #1406326
統計： A(38), B(308), C(83), D(14), E(0) #1406326
