问题:Since the time humankind started gardening, we ___
提问者:x0fa56e4r
详细内容:

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

分享到: 0
点击收缩

在线客服

进步平台网
在线客服