I was too careless.If only I my car!A. hadnt lostB. would not have lostC. didnt loseD.

问题补充：

I was too careless.If only I my car!

A. hadn lost

B. would not have lost

C. didn lose

D. haven’t lost

答案：

(答案→)A. hadn lost

B. would not have lost

C. didn lose

D. haven’t lost

解析：根据前一句I was too careless，我太不小心，可知后一句意思是：要是我不粗心的话，我就不会丢失我的车。这是虚拟语气。