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-Have you known Dr. Jackson for a long time?-Yes.since she the Chinese Society.

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-Have you known Dr. Jackson for a long time?-Yes.since she the Chinese Society.

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

—Yes,since she ________ the Chinese  Society.  

A.has joinedB.joins
C.had joinedD.joined

试题答案

D

解析