【題目】 I often help my mother some cleaning home.

A. do； at B. to do； on

C. doing； in D. doing； at

【答案】A

【解析】

試題分析：句意： 在家里我經(jīng)常幫媽媽做掃除。at home在家里；help sb. (to) do sth幫助某人做某事。所以選A。

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