早教吧 育儿知识 作业答案 考试题库 百科 知识分享

Everymeanstriedtoimproveteachingandlearning.A.hasB.hasbeenC.haveD.were

题目详情
Every means __ tried to improve teaching and learning. A.has B.has been C.have D.were
▼优质解答
答案和解析
应该选B吧,仅供参考