Mary got the first prize in the National Math Competition, ________, for sure, delighted everyone. A...
2023-01-23 15:29:34 112次 2012届度北京一零一中高二第二学段模块英语卷（必修6） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Mary got the
first prize in the National Math Competition, ________, for sure, delighted
everyone.
A. who B.
that C.
this D.
which
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