当留学生遇到留学生问好时，可以使用以下几种回答方式：
基本问候
“I'm doing great, thanks! And you？”
“Good, thanks a lot. What about you？”
友好交流
“You know, nothing new. How about you？”
“Just so-so, but I'm managing.”
简洁回答
“Good!”
“Fine, thanks!”
稍显随意
“Hey, how are you today？”
“How's everything going？”
如果不太熟悉
“I'm good, thanks! And you？”
“I'm fine, and how are you？”
记得在回答后礼貌地询问对方近况，如“How about you？”或“What's up？”以保持对话的友好和流畅