题目内容
【题目】My parents would have come to see you if it had been possible, but they __________ so busy.
A. were B. had been
C. have been D. would be
【答案】A
【解析】考查时态。此句考查的时态和虚拟语气联系在了一起。前半句句意:如果那时可能的话,我的父母会来看你的。根据虚拟语气结构可知指的时间为过去,因此后面用一般过去时态。
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