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【题目】--- I don’t know ______ he will come or not tonight.

--- Me neither.

A. if B. whether C. who D. what

【答案】B

【解析】

句意:——我不知道他今晚是否会来。——我也不知道。A. if是否; B. whether是否; C. who谁;D. what什么。who, what在宾语从句中要充当主语或宾语,而本句不需要连接词充当句子成分,排除C,D;if/weather都有是否的意思,一般可以互换,or not只能与whether连用,不能与if连用,故答案选B。

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