问题补充：
---Kevin, you look worried. Anything wrong ?
---Well, I a test and I’m waiting for the result.
A. will take
B. had taken
C. took
D. take
答案：
A. will take
B. had taken
(答案→)C. took
D. take
解析：考查时态：句意：--kevin,你看起来很担心，怎么了？--我参加了一次考试，现在正在等结果。油I’m waiting for the result.可知是过去参加考试的，选C。
