The worsening of global warming, _____human activities are to blame, has led to frequently extreme w...
2023-02-02 02:02:05 135次 2012届福建省福州八县（市）高二下学期期中联考英语题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The worsening of
global warming, _____human activities are to blame, has led to frequently
extreme weather.
A.
by which B. for which C.
that D.
what
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