Have you ever wondered why some of the smartest students in your class sometimes failing

问题补充：

Have you ever wondered why some of the smartest students in your class sometimes failing exams?

A. take up

B. pick up

C. come up

D. end up

答案：

A. take up

B. pick up

C. come up

(答案→)D. end up

解析：可联系答.案.网客服索取。