问题
选择题
You__________buy a gift, but you can if you want to.
A．must
B．mustn't
C．have to
D．don't have to
答案
答案：D
搜题请搜索小程序“爱下问搜题”
You__________buy a gift, but you can if you want to.
A．must
B．mustn't
C．have to
D．don't have to
答案：D