问题
选择题
---Who broke the window?---_____.
A．I found
B．I did
C．I find
D．I do
答案
答案：B
did代替前面的broke the window
搜题请搜索小程序“爱下问搜题”
---Who broke the window?---_____.
A．I found
B．I did
C．I find
D．I do
答案：B
did代替前面的broke the window