问题
选择题
— Why do you look so worried?
— My MacBook Pro broke down and my paper________unfinished since.[ ]
A. was left
B. has left
C. 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 MacBook Pro broke down and my paper________unfinished since.[ ]
A. was left
B. has left
C. left
D. has been left
答案：D