He wrote a letter ________ he explained what had happened in the accident. A. what B. which C. where...
2022-11-30 18:23:17 22次 2015届河北正定中学高二上学期期中考试英语试卷（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.
as
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