— Why do you look so worried?
—My puter broke down and my essay unfinished since.
A. had left
B. has left
C. has been left
D. was left
网友回答
A. had left
B. has left
(答案→)C. has been left
D. was left
解析：上文意思是“你为什么看起来这么为难？”，下文意思为“我的电脑坏了，我的散文还没有写完”，表示过去的某一动作或行为一直持续到现在，所以用现在完成时，又因为 “ essay”与“leave”是被动关系，故用现在完成时的被动语态，故选C。