Every possible means__,but theproblem remains unsolved.A.has been triedB.have been triedC.has triedD.have triedA?

分类: 作业答案 • 2022-02-18 10:56:19

问题描述：

Every possible means__,but theproblem remains unsolved.
A.has been tried
B.have been tried
C.has tried
D.have tried
A?

答

对的，选A means这里是方式的意思，单数来的

答

A
已经被尝试过了