问题
选择题
The key _____ locking the classroom door. [ ]
A. uses to
B. is used to
C. is using for
D. is used for
答案
答案：D
搜题请搜索小程序“爱下问搜题”
The key _____ locking the classroom door. [ ]
A. uses to
B. is used to
C. is using for
D. is used for
答案：D
