[题目]The students the classroom, so it's tidy and clean now.A.CleanB.have cleanedC.will cleanD.cleans 题目和参考答案——青夏教育精英家教网——

题目内容

【题目】The students ______ the classroom, so it's tidy and clean now.
A.Clean
B.have cleaned
C.will clean
D.cleans

【答案】B
【解析】句意：学生们已经打扫了教室，因此现在是整洁和干净的。根据语境可知用现在完成时，其结构是have/has done的形式。主语是复数，这里用助动词have。根据题意，故选B。

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