题目内容
【题目】Lin Lin helped her mom _____the house during the holiday.
A. cleaned B. clean C. cleaning D. cleans
【答案】B
【解析】
句意：琳琳在假期期间帮助她妈妈打扫房子。help sb do sth“帮某人做某事”，故用动词原形clean。故选B。
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题目内容
【题目】Lin Lin helped her mom _____the house during the holiday.
A. cleaned B. clean C. cleaning D. cleans
【答案】B
【解析】
句意：琳琳在假期期间帮助她妈妈打扫房子。help sb do sth“帮某人做某事”，故用动词原形clean。故选B。