We needn’t have watered the trees.You see it looks like .A. rainsB. to be rainingC. rainD.

问题补充：

We needn’t have watered the trees.You see,it looks like .

A. rains

B. to be raining

C. rain

D. rained

答案：

A. rains

B. to be raining

(答案→)C. rain

D. rained

解析：rain可作名词用，look like rain 看起来像是要下雨。