The USA and some other countries helped the rebels in Libya their promise to support demo

问题补充：

The USA and some other countries helped the rebels in Libya their promise to support democracy and fair trade.

A. in danger of

B. in memory of

C. in peace for

D. in return for

答案：

A. in danger of

B. in memory of

C. in peace for

(答案→)D. in return for

解析：词义辨析。in danger of处于……的危险中；in memory of为了纪念；in peace for为了和平；in return for作为对……的回报。句意：美国和一些其他国家帮助利比里亚的反政府武装作为对他们许诺支持民主和公平贸易的回报。所以选D。