2. 专升本
  3. Since the time humankind started gardening, we______to make our environment more beautiful.

Since the time humankind started gardening, we______to make our environment more beautiful.

admin2017-03-21  29
问题 Since the time humankind started gardening, we______to make our environment more beautiful.
选项 A、try
B、have been trying
C、are trying
D、will try
答案B
解析 考查动词时态。根据时间状语“Since the time humankind…”可知“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。
转载请注明原文地址:https://jikaoti.com/ti/GnKGFFFM
本试题收录于： 英语题库普高专升本分类
0

英语

普高专升本

相关试题推荐
随机试题
最新回复(0)