2008 宁夏、海南 Question 30 Single-choice Differentiating 2008_宁夏、海南卷 (英语) 27. —Have you known Dr. Jackson for a long time?—$Yes, since she ______ the Chinese Society.$ A. has joinedB. joinsC. had joinedD. joined Answer keyD ☆ SaveCan't do it, show the explanation查看原卷 →