Question

Peter graduated from university in 1998. He ____ in a high school ever since.

1. A.
   works
2. B.
   is working
3. C.
   worked
4. D.
   has worked

Answer 1

D
试题分析：考查时态。根据关键的时间状语。Ever since从那以后，与现在完成时连用，故D正确。
考点：考查时态
点评：时态的考查要抓关键词本题的关键词是ever since，故与现在完成时连用。