People moreandmoreusefulthingstoprotecttheeart...
来源:语文精选馆 3.15W
问题详情:
People more and more useful things to protect the earth since Earth Day was started.
A. did B. were doing C. will do D. have done
【回答】
D
知识点:动词时态
题型:选择题
问题详情:
People more and more useful things to protect the earth since Earth Day was started.
A. did B. were doing C. will do D. have done
【回答】
D
知识点:动词时态
题型:选择题