I'd rather you _____anything about it right now.

A. would happen 　　　　　　 　　　　  B. happened

C. would have happened 　      　　　  D. happens

昨日习题答案： 

He kept his head; otherwise the accident______.

A. would happen 　　　　　　 　　　　  B. happened

C. would have happened       　　　　  D. happens

标准答案是：C.

本题分析：这是表示与过去事实相反的假设。keep one's head意为“保持镇静”。