题目内容

But for the sudden rainstorm, our trip to Hong Kong _____ a very pleasant one.
A.wasB.would have beenC.would beD.had been
B
if 虚拟的一种,对过去虚拟, if 后用had done , 主句用would/ could /might have done.如果句子内没有if, 可用but for, without .
例如: But for your help, I wouldn’t have finished the job.
Without your help, I wouldn’t have finished the job.
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