Look! It hard now. You’d better wait for a while until it stops.A. rainsB. has rainedC. w

问题补充：

Look! It hard now. You’d better wait for a while until it stops.

A. rains

B. has rained

C. will rain

D. is raining

答案：

A. rains

B. has rained

C. will rain

(答案→)D. is raining

解析：句意：看，现在雨下的正大，你最好等一会儿直到雨停。根据句意及提示词look，可知此空应用现在进行时态，故选D。