【08宁夏卷】27.—Have you known Dr.Jackson for a long time?

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【08宁夏卷】27.—Have you known Dr.Jackson for a long time?
27.—Have you known Dr.Jackson for a long time?
—Yes,since she ______ the Chinese Society.
A.has joined B.joins C.had joined D.joined
为什么不是A
还有翻译一下.

你认识杰克逊博士很久了吗?
---是的,自从他加入汉语协会（我们就认识了）
因为JOIN是一个短暂性动词,不能用完成时来表示.所以排除A,C.
同时,他加入汉语协会的这个动作已经发生,所以排除B.

【08宁夏卷】27.—Have you known Dr.Jackson for a long time? 27.—Have you known Dr Jackson for a long time?—Yes,since she Have you known Dr jackson for a long time?—Yes,since she()th Have you known Dr.Jackson for a long time?Yes,since she join Have you known Dr.Jackson for a long time?Yes,since she ___t 英语问题9道1、---Have you known Dr.jackson for a long time?\----Ye 1.Have you known Dr.Jackson for a long time?yes ,since she - Have you known Jessie for a long time?Yes,since ——Have you known each other for long? 句子I knew him for a long time为什么不用 have known用knew? 英语阅读,Doctors have known for a long time that extremely loud 英语翻译We have known for a long time that flowers of different