I think the teacher must( )carefully in class first.A.listen B.be_英语解答

I think the teacher must( )carefully in class first.
A.listen B.be listened C.be listened to D.be listening

人气：430 ℃　时间：2020-03-24 04:10:53

解答

C.
be listened to被听.因为是学生听讲不是老师认真听所以不能选A（虽然语法过得去）.
be+动词是被动结构.
望采纳.谢谢.