问题
选择题
---So you've left the classroom key inside again?
---No.I've got it with me this time,but I have forgotten ______ the door?
A．locking
B．locked
C．to lock
D．to have locked
答案
答案：C
搜题请搜索小程序“爱下问搜题”
---So you've left the classroom key inside again?
---No.I've got it with me this time,but I have forgotten ______ the door?
A．locking
B．locked
C．to lock
D．to have locked
答案：C
