No one knew what because of the thick fog. A．he had happened B．had happened to him C．had he happened...
2023-02-18 02:36:23 137次 2012-2013学年江苏省盐城市东台许河镇九年级下学期第一次月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
No one knew what because
of the thick fog.
A．he had
happened B．had happened
to him
C．had he
happened D．has happened
to him
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