题目内容
【题目】Did you ______ your mother ___ the room yesterday?
A. helped, clean
B. helped, cleaned
C. help, clean
D. help, cleaned
【答案】C
【解析】
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题目内容
【题目】Did you ______ your mother ___ the room yesterday?
A. helped, clean
B. helped, cleaned
C. help, clean
D. help, cleaned
【答案】C
【解析】