1.A.Are you Mr Green?B.No,I'm not.C.Sorry.D.Good-bye.
2.A.It's a book.B.What's your name?C.How are you?D.I'm Li Lei.
3.A.His name is Wu Wei Dong.B.What's this?C.Where is it?D.It is here.
4.A.Can you spell it,please?B.Thank you.C.You are welcome.D.Welcome to China.
5.A.Goodbye!B.Bye-bye!C.See you later!D.How do you do?