— Have you finished your position already?
— Yes. I it in twenty minutes.
A. have finished
B. finished
C. will finish
D. had finished
网友回答
A. have finished
(答案→)B. finished
C. will finish
D. had finished
解析：此题考查时态的用法。此题易误选答案C，若选C，则说明作文还未写完，这与前
面的回答Yes 矛盾；如果选A，则强调的是动作的影响；而D为过去完成时态，必须相对
于过去时态而言，但句中并没有使用过去时态。一般来说，用现在完成时态提问，而用一般
过去时态回答。故只能选答案B。