题目内容
六.选择填空
1. 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
B
练习册系列答案
相关题目
六.选择填空(15分)
1. 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 |