He wrote a letter ___he explained what had happened in the accident. A. what B. which C. where D. wh...
2022-11-21 12:52:22 61次 2013-2014学年福建省高三第五次月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He wrote a letter ___he explained what had happened in the accident.
A. what B. which
C. where D. when
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