题目内容
18．We don't know _______ the meeting will be held soon．（ ）| A． | when | B． | what | C． | whether | D． | since |
分析 我不知道一会儿是否召开会议．
解答 答案：C 根据选项内容可知考查宾语从句的引导词；又根据don't know可以推断用whether 引导宾语从句，表示"是否"，故选C．
点评 本题考查宾语从句，做题时注意三要素时态、语序和连接词．也要根据句子的上下文的意思，做出选择．
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