[题目] I don’t know he will come or not tomorrow.A. weather B. whether C. if D. that 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】 I don’t know _____ he will come or not tomorrow.

A. weather B. whether C. if D. that

【答案】B

【解析】

试题分析：句意：我不知道是否他明天回来。if引导宾语从句翻译为是否。whether是否，只能引导宾语从句，可以和 or not连用，但是if不能。根据句意，故选B。

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