发布网友
共5个回答
热心网友
可以直接打招呼:Hi?
或者:Are you free?
等等。
热心网友
are you there?
are you online?
热心网友
what for ? 表示询问目的
what are u doing ?询问正在干什么
热心网友
There you are?
热心网友
Hi, are you here?