题目内容
补全对话
A:Excuse me, sir.
B:Yes? 1
A:I want to send some letters, but I can't find the post office.Can you tell me where it is?
B:Of course. 2
A:Is it the building on the left?
B: 3
A:Thanks a lot.
B: 4
A:Goodbye.
B: 5
答案:A,D,C,B,E
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