问题
选择题
—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
答案
答案:D
句意:—你认识杰克逊博士很久了吗?—是的,自从她加入中国协会以来。显然,这是一个过去的动作,故要用一般过去时。
—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
答案:D
句意:—你认识杰克逊博士很久了吗?—是的,自从她加入中国协会以来。显然,这是一个过去的动作,故要用一般过去时。