Is it the burning of more fossil fuels ______ is resulting in this increase in carbon dioxide ? A. ...
2023-02-16 16:28:27 149次 2010届高考英语二轮复习跟踪测试：特殊句式（强调、省略、倒装）专题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Is it the burning of more fossil fuels
______ is resulting in this increase in carbon dioxide ?
A. as B.
which C. what D.
that
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