Idon'tknow___theyhavepassedIdon'tknow___theyhavepassedtheexam1.what2.if3.when4.where
2022-05-05 50次 反馈错误 加入收藏 正确率 : 100%
题目内容：
I don't know___they have passed
I don't know___ they have passed the exam
1.what
2.if
3.when
4.where
优质解答
2
从句成分完整
表示带有疑问,if此处同whether
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