问题补充:
–Why do you look so upset?
–The electricity was cut off suddenly and my essay unfinished since.
A. was left
B. has left
C. left
D. has been left
答案:
A. was left
B. has left
C. left
(答案→)D. has been left
解析:
试题分析:句意:——你为什么看上去这么沮丧呢?——突然停电了,从那时我的文章就没写完。根据句中的since判断句子应该用现在完成时,而essay和动词leave之间是被动关系,故答案选D。