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11.He had to help his parents ___ on the farm on weekends.A.

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11.He had to help his parents ___ on the farm on weekends.A.work B.working C.works D.worked
11.He had to help his parents ___ on the farm on weekends.A.
在动词help后面碰到另一个动词作宾语补语时,这另外一个动词要用动词不定式的形式,这个动词不定式可以带to(带to的不定式),也可以不带to(由动词原形构成),这里没有带to的不定式的选项,只有不带to的不定式的选项,即选项A,所以这道题目选择A,表示“在周末他必须帮助父母在农场干活.”希望我能帮助你解疑释惑.