题目内容
【题目】 Everyone has periods in their lives __________ everything seems very hard.
A. when B. where C. which D. that
【答案】A
【解析】句意:在一生中,每个人都有看似一切都不顺利的 时期。when引导定语,从句修饰先行词periods,将其代 人定语从句为:in these periods ( = in which) every-thing seems very hard.
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