If the weather had been better we could have had a picnic. But it all day.A. rainsB. has

问题补充：

If the weather had been better, we could have had a picnic. But it all day.

A. rains

B. has rained

C. rained

D. is raining

答案：

A. rains

B. has rained

(答案→)C. rained

D. is raining

解析：考查虚拟语气和时态。在虚拟语气中，but后面的句子应该使用陈述语序。本题根据. If the weather had been better, we could have had a picnic说明是与过去事实相反的虚拟语气，那么but后面的陈述句使用一般过去时。

考点;考查虚拟语气和试题