Careless driving a lot of highway accidents.A. affectsB. makesC. causesD. results

问题补充：

Careless driving a lot of highway accidents.

A. affects

B. makes

C. causes

D. results

答案：

A. affects

B. makes

(答案→)C. causes

D. results

解析：主要测试动词。此处cause = make ；happen；导致 be the cause of =result in。句子译文：粗心驾驶导致许多公路事故。