He (work)______ on the farm for five years before he went to the college.

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问题 He (work)______ on the farm for five years before he went to the college.

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答案had worked

解析 本题考查动词的时态。根据题意,他上大学这件事发生在过去某个时间,那么谈到在此之前的他在农场工作的事情,自然要用过去完成时,故答案为work的过去完成式had worked。
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