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

问题补充：

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

答案：

A. always listen

B. are listening

(答案→)C. are always listened to

D. 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。