问题
选择题
We have_ _ up early in order to catch the early bus. [ ]
A. used to get
B. been used to get
C. used for getting
D. been used to getting
答案
答案：D
搜题请搜索小程序“爱下问搜题”
We have_ _ up early in order to catch the early bus. [ ]
A. used to get
B. been used to get
C. used for getting
D. been used to getting
答案：D
，关于X的分布可描述为()。