组卷网 > 初中英语综合库 > 单词辨析 > I > if (是否)
题型:单项选择 难度:0.4 引用次数:535 题号:11742462
I don’t know ________ she will come or not tomorrow.
A.whenB.ifC.whetherD.what
20-21八年级上·全国·课后作业 查看更多[2]

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