Tim is the one of them who____ (be) to China.

问题描述:

Tim is the one of them who____ (be) to China.

Tim is the one of them who____ (be) to China.
Tim是他们中去过中国的一个.
这个句子中关键是one of ……前面的the,如果没有这个“the”,则应该填have been,但有这个“the”,就应该填has been.自己体会一下,应该很容易理解的.