【题目】 But for the fact that Mr Smith ________ill yesterday, he would have attended the important meeting.
A. was B. be C. were D. had been
在线课程【答案】A
【解析】
试题分析：句意：A. was 一般过去时，单数； B. be be 动词的原形 C. were 一般过去时，复数； D. had been 过去完成时；尽管题干中有虚拟语气but for，但是the fact是表示“事实”， 又根据yesterday得知史密斯先生昨天生病了.故选A。