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.
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.
joined

teach
教

was brought into

taught