问题
选择题
They are always friendly, __ ? [ ]
A. are they
B. aren't they
C. do they
D. don't they
答案
答案：B
搜题请搜索小程序“爱下问搜题”
They are always friendly, __ ? [ ]
A. are they
B. aren't they
C. do they
D. don't they
答案：B