Question

—You seem to have known Dr. Ken for a long time.
—That’s true. ________ he joined our club years ago.

A．Since

B．Until

C．When

D．If

Answer 1

A

连词辨析。A. 自从……以来   B.直到 C. 既然，当……时 D. 是否，如果。句意：你好像认识肯博士很久了。——是的，自从他几年前加入我们俱乐部以来。故选A。