题目内容
If the weather had been better, we could have had a picnic. But it ____ all day.
A. rained B. rains C. has rained D. is raining
A
解析:
从题干前部分句子的谓语动词结构(虚拟语气)可以看出是指过去某个时间已经下了整天的雨。所以应该用一般过去时态。该题解题关键要从题干前部分入手。if非真实条件句用的过去完成时,主句用would have done,我们可以看出这是与过去事实相反的虚拟语气。
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