题目内容
【题目】—What's your sister doing? —She ________ the house. ( )
A. cleans B. cleaning C. is cleaning
【答案】C
【解析】
略
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题目内容
【题目】—What's your sister doing? —She ________ the house. ( )
A. cleans B. cleaning C. is cleaning
【答案】C
【解析】
略