[题目]--Did you receive the letter the next day?--No, somehow, it was three weeks I received it.A. since B. when C. that D. before 题目和参考答案——青夏教育精英家教网—

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【题目】--Did you receive the letter the next day?

--No, somehow, it was three weeks ______ I received it.

A. since B. when C. that D. before

【答案】D

【解析】

试题分析：句意：第二天你收到信了吗？没有，不知道为什么，三周后我才收到信。固定结构It+be+时间段+before.....表示“要..(时间段)..才.....”，故选C.

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