Question

【题目】Great changes ______ in China in the past 20 years.

A. took place B. have taken place

C. were taken place D. have been taken place

Answer 1

【答案】B

【解析】

试题分析：B考查动词时态。时间短语in the past 20 years在过去的20年，通常用于现在完成时里，而又由于take place表发生时，常主动表被动。故选B。