Professor Liu has teach psychology since he came to the Central China Normal University.A

问题补充：

Professor Liu has teach psychology since he came to the Central China Normal University.

A. determination to

B. been determined to

C. been determining to

D. determined to

答案：

A. determination to

(答案→)B. been determined to

C. been determining to

D. determined to

解析：Since引导的时间状语从句强调主句谓语动词动作的持续性。