Question

【题目】Over fifty countries _______ the AIIB(亚投行) so far.

A. joined B. was joining

C. had joinedD. have joined

Answer 1

【答案】D

【解析】

试题分析：句意：到目前为止五十多个国家加入了亚投行。根据so far可知该用现在完成时，所以选D。