_______ is certain, people’s living conditions in China have improved a lot since the 1980s. A. It ...
2023-01-27 06:15:25 63次 2010年江苏省高一上学期期中考试英语卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
_______
is certain, people’s living conditions in China have improved a lot since the
1980s.
A.
It B.
As C. what D.
Which
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