问题补充:
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
答案:
A. to promote
B. having been promoted
C. having promoted
D. to be promoted
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 。