If the weather had been better, we could have gone outing. But it all day.
A. rains
B. has rained
C. had been rained
D. rained
网友回答
A. rains
B. has rained
C. had been rained
(答案→)D. rained
解析：考查时态：句意为：如果天气好的话，我们是能够去野餐的，但是下了一天的雨。句子前半部分陈述的是与过去事实相反的事情，所以用了虚拟语气。“下了一天的雨”是事实，所以用陈述语气。因为是发生在过去的事实，所以正确答案为D。