A you are free B it is free C feel free D be free区别--here ,your new computer is ready .--thank you--____to call this number if you have any problemsAyou are free B it is free C feel free D be free为什么选C
问题描述：
A you are free B it is free C feel free D be free区别
--here ,your new computer is ready .
--thank you
--____to call this number if you have any problems
Ayou are free B it is free C feel free D be free
为什么选C
答