I have $20 000 and I need $25 000 but my parents have promised to the difference.A. work

问题补充：

I have $20 000 and I need $25 000,but my parents have promised to the difference.

A. work out

B. come up

C. give out

D. make up

答案：

A. work out

B. come up

C. give out

(答案→)D. make up

解析：考查动词短语的区分。make up的意思是“弥补,填补”。