问题
选择题
—Why do you look so worried?
—My computer broke down and my essay ________ unfinished since.[ ]
A. had left
B. has left
C. was left
D. has been left
答案
答案：D
搜题请搜索小程序“爱下问搜题”
—Why do you look so worried?
—My computer broke down and my essay ________ unfinished since.[ ]
A. had left
B. has left
C. was left
D. has been left
答案：D