问题
选择题
These newspapers are free. You ________ keep one if you like.
[ ]
A. may
B. should
C. must
答案
答案：A
搜题请搜索小程序“爱下问搜题”
These newspapers are free. You ________ keep one if you like.
[ ]
A. may
B. should
C. must
答案：A