问题
选择题
In the past, ice food, but now we have refrigerators. [ ]
A. used to keep
B. used to be used for keeping
C. was used to keeping
D. used to be used to keeping
答案
答案：B
搜题请搜索小程序“爱下问搜题”
In the past, ice food, but now we have refrigerators. [ ]
A. used to keep
B. used to be used for keeping
C. was used to keeping
D. used to be used to keeping
答案：B