情景选择，把序号写在横线上。
1.Hello.
______________
2.Goodbye!
_______________
3.Good morning. Mr. Wu
_______________
4.Good evening. How are you?
_______________
5. Good night.
_______________
A．Good morning. I’m glad to see you again.
B．Good night.
C．Hi.
D．I’m not very well.
E．Bye!
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