题目内容
【题目】He _________ his mother _________ housework last night. （ ）
A.helps, doB.helped, didC.helped, do
【答案】C
【解析】
略
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题目内容
【题目】He _________ his mother _________ housework last night. （ ）
A.helps, doB.helped, didC.helped, do
【答案】C
【解析】
略