根据中文大意和英文提示词语，写出意思连贯、符合逻辑，不少于60词的文段。请将文段写在答题卡上。
目前，许多同学学会了上网聊天。他们在结识新朋友，学习新东西的同时，也遇到了很多问题。下面是几个同学的困惑，请你针对他们的问题，谈谈你对网上聊天的看法，并给他们提出一些可行性的建议。

Peter	If the net-friends want to know my phone number, what should I do?
John	Sometimes, I meet some adults. I have nothing to chat with them. What should I do?
George	If they want to visit or invite me, what should I do?