Juliana worked harder to for the time she had lost when she was ill.A. keep upB. catch up

问题补充：

Juliana worked harder to for the time she had lost when she was ill.

A. keep up

B. catch up

C. make up

D. take up

答案：

A. keep up

B. catch up

(答案→)C. make up

D. take up

解析：make up for the time弥补时间。