TherearesomeoftheOlympicathleteswhohavebroughtjoytopeo...

问题详情：

 There are some of the Olympic athletes who have brought joy to people across the world with their attempts ________ the boundaries of human achievements.

A. push            B. pushed       C. being pushing           D. to push

【回答】

D

知识点：非谓语动词

题型：选择题