I hear they’ve promoted Tom, but he didn’t mention when we talked on the phone.A

I hear they’ve promoted Tom, but he didn’t mention _____ when we talked on the phone.

A. to promote            B. having been promoted

C. having promoted        D. to be promoted

试题答案

B 

解析：本题考查非谓语动词的用法。mention to do sth. 提到将要做某事 mention doing sth.  提到已经做过某事，本题应用完成被动式，D项应改为 mention to have been done 。