题目内容
【题目】 When and where this took place _____ still unknown.
A. is B. has C. were D. are
【答案】A
【解析】
试题分析:考查系动词。句意:这个发生在何时何地还不清楚。就近原则,无论when where哪个在前均用单数形式,故选A。
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题目内容
【题目】 When and where this took place _____ still unknown.
A. is B. has C. were D. are
【答案】A
【解析】
试题分析:考查系动词。句意:这个发生在何时何地还不清楚。就近原则,无论when where哪个在前均用单数形式,故选A。