题目

 — Your classroom is really bright and clean.  —It _____ after school every day. A. is cleaned     B. cleaned     C. was cleaned 答案：A 解析:动词语态。every day是一般现在时的标志。根据句意，你们教室真的既明亮又干净。每天放学后我们打扫它。此处是被动语态省略了by us。一般现在时被动语态构成：be+动词过去分词。故选A。

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