题目内容
【题目】Since the time humankind started gardening, we _ _ to make our environment more beautiful.
A. try B. have been trying
C. are trying D. will try
【答案】B
【解析】
试题分析:句意:自从人类开始有园林艺术,我们就一直努力让环境更美。根据时间状语“Since the time humankind started gardening”,意为“自从人类开始有园林艺术”,说明“我们努力让环境更美”的行为从过去一直持续到现在,用现在完成进行时,故选B。
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目