Mary can’t help the room because she’s busy with her homework． [ ] A．to clean B．cleaning C．cleaned D．being cleaned 题目和参考答案——青夏教育精英家教网—

题目内容

Mary can’t help ________ the room because she’s busy with her homework．

[　　]

A．to clean

B．cleaning

C．cleaned

D．being cleaned

答案：A
解析：

to clean不定式结构做目的状语，表示无法帮忙去打扫房间。

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