We don't know ______ he will come or not. [ ]A、ifB、whether C、unless D、when -九年级英语

题目简介

We don't know ______ he will come or not. [ ]A、ifB、whether C、unless D、when -九年级英语

题目详情

We don't know ______ he will come or not.
[     ]
A、if
B、whether
C、unless
D、when
题型:单选题难度:中档来源:广东省期中题

答案

B

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