I took a risk to carry out the project but it in the end. A. paid upB. paid outC. paid

问题补充：

I took a risk to carry out the project, but it in the end.

A. paid up

B. paid out

C. paid off

D. paid back

答案：

A. paid up

B. paid out

(答案→)C. paid off

D. paid back

解析：短语辨析。 A. 全部付清 B. 付钱；报复 C. 付清；取得成功 D. 偿还；报答。句意：我冒险事实该项目，但是最后取得了成功。故选C。