- Look at the black clouds. It soon.　Sure. If only we out.A. is raining; didn’t c

问题补充：

--- Look at the black clouds. It soon.

--- Sure. If only we out.

A. is raining; didn’t come

B. is to rain; won’t start

C. will rain; haven’t started

D. is going to rain; hadn’t come

答案：

A. is raining; didn’t come

B. is to rain; won’t start

C. will rain; haven’t started

(答案→)D. is going to rain; hadn’t come

解析：表示“天将下雨”常用It’s going to rain。If only...表示“但愿……”；如果表示与过去的事实相反，句中谓语动词常用过去完成时态。