Don’t worry. The children always work hard and the teachers in class.A. always listenB. a

Don’t worry. The children always work hard and the teachers in class.
A. always listen
B. are listening
C. are always listened to
D. are always listening to

A. always listenB. are listening(答案→)C. are always listened toD. are always listening to解析：此题重点考察一般现在时的被动语态的基本结构。

就是这个解释