组卷网 > 初中英语综合库 > 语法 > 主从复合句 > 宾语从句 > 宾语从句的引导词 > if/whether引导宾语从句
题型:单项选择 难度:0.4 引用次数:373 题号:8604929
I didn't know ________he will come or not.
A.thatB.whetherC.whenD.how
19-20九年级上·全国·课时练习 查看更多[3]

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