If it for the snow, we the mountain yesterday.
A. were not; could have climbed
B. were not; could climb
C. had not been; could have climbed
D. had not been; could climb
网友回答
A. were not; could have climbed
B. were not; could climb
(答案→)C. had not been; could have climbed
D. had not been; could climb
解析:句意:假如天气昨天没有下雪,我们就已经爬上了那座山峰。if引导的从句对过去情况的虚拟推测,从句用had done,主句用would/should/could+have +done,故选C