【whatdoyouthink__toprotectourenvironmentinthepastfewyear?AtodoBwasdoneChasbeendoneDhavedone】
2022-06-26 25次 反馈错误 加入收藏 正确率 : 100%
题目内容：
what do you think__to protect our environment in the past few year?
A to do B was done C has been done D have done
优质解答
选择 C
应该是一个现在完成时,并且应该用被动语态
本题链接：
