---HaveyouknownDr.Jacksonforalongtime?---Yes,eversince...

问题详情：

 --- Have you known Dr. Jackson for a long time ?

--- Yes, ever since she ______ the Chinese Society.

A. has joined            B. joins            C. had joined           D. joined

【回答】

D

知识点：一般过去时及其被动式

题型：选择题