—Oh,my!ProfessorSmithandyouhavebeenfriendsforovertenye...

问题详情：

 — Oh, my! Professor Smith and you have been friends for over ten years.

   —Yes, since he      to China.

   A. came                       B. has come           C. had come          D. comes

【回答】

A

知识点：一般过去时及其被动式

题型：选择题