题目内容

14、 (2010年烟台检测)He is rather difficult to make friends with，but his friendship，________，is more true than any other’s.

A．once gained                         B．when to gain

C．after gaining                        D．while gaining

试题答案

14、解析：选A。考查省略。这里“once gained”是once the friendship is gained的省略，由此可知，the friendship与gain之间存在“被动关系”，所以这里选A。