问题
选择题
_________ whenever you like;you are always welcome.
A．Drop out
B．Call at
C．Drop in
D．Call on
答案
答案：C
搜题请搜索小程序“爱下问搜题”
_________ whenever you like;you are always welcome.
A．Drop out
B．Call at
C．Drop in
D．Call on
答案：C