I try to understand __________ that prevents so many Chinese from being as happy as one might expec...
2023-02-09 08:55:46 188次 辽宁省沈阳二中2010-2011学年上学期高三阶段测试二 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I try to understand
__________ that prevents so many Chinese from being as happy as one might
expect．
A．why is it
B．what is it
C．why it is
D．what it is
本题链接：
