Everymeans
问题详情： Everymeans_________triedbutwithoutanyresult.A.havebeen B.hasbeen C.aretobe D.istobe【回答】B知识点：现在完成时及其被动式题型：选择题...
Everymeans
问题详情：Everymeans_________,butnoneproved__________.A.havetried;asuccess B.havebeentried;successfulC.hastried;tobesuccessful ...