Work hard at your lessons and you’ll your classmates.A. catchB. catch upC. keep withD.

问题补充：

Work hard at your lessons, and you’ll your classmates.

A. catch

B. catch up

C. keep with

D. keep up with

答案：

A. catch

B. catch up

C. keep with

(答案→)D. keep up with

解析：本题的含义是在你的功课上努力学习，你将会赶上你的同班同学，keep up with表示赶上某人的意思，故本题选D。