Itwasafterwhatseemedlikeacentury

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It was after what seemed like a century ________ we were allowed to go home.

A. when B. which

C. as D. that

D　句意：就好像是过了一个世纪我们才被允许回家。本题强调了时间状语，去掉强调句式的句子是We were allowed to go home after what seemed like a century。