4:Hi 2,long time no see
2:Hey 4,it's you ,long time no see.
4:How are you?
2:Fine ,thanks .and you?
4:I;m fine too.hey ,is that
2:oh ,I can't believe my eyes ,that's 3
4&2:hey,3,come here
3:Oh my god !
4:small world ,isn't it?
2:I thought You were in England .
4is for grade four,3 is for grade three
2 is for grade 2
3:So glad to meet you here,buddies.
4:what's new?
3:I'm so homesick ,so I returned.
2:we missed you ,too.
3:thanks.It's lunch time now,what about eating together?
4&2:why not
3:ok ,let's go .and it's on me.