初三的学生英语补全对话做得不好，如何提高？

初中英语3人对话（4分钟）

A;hello nice to meet you here ,B!how do you do ?
B;oh yerh,so do I!how do you do?
A;I'm glad to introduce my friend ,C,to you !C,this is my good friend B,he is friendly to everybody!
C;how do you do ?I 'm so glad to meet you!my name is C!I'm a new comer here!
B;nice to meet you !my name is B.welcome to our country!
C;Thank you so much!
A;hey,B,where are you gonging?
B;I'm gonging to my aunt's home to take some books!
A;it's ok!we are gonging to the supermarket for shopping!now we have to go now!I hope o see you soon!
B;yeah,I hope so!see you!
C;so long!