The math problem is so hard, I really don’t know _____. A. how to do it B. how to do C. what to do i...
2023-01-11 13:10:14 107次 2014-2015学年山东东营胜利油田学校七校九年级上联考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The math problem is so hard, I really don’t know _____.
A. how to do it B. how to do
C. what to do it D. when to do
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