He suddenly fell ill, ______ prevented him from attending his friend’s wedding. A．why B．what C．that ...
2022-12-16 07:43:36 135次 2014届北京市高二下学期期中考试英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He suddenly fell ill, ______ prevented him from
attending his friend’s wedding.
A．why B．what C．that D．which
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