—I joined the League ______ May, 2009. What about you?
—I’ve been a League member ______ three years.
- A.in; for
- B.on; in
- C.on; for
- D.in; since
答案
正确答案:A

in 年in月,第二空为完成时的标志词,后为时间段,用for。

介词的用法掌握的不好,现在完成时的标志词用法掌握的不好。
