根据下面的对话情景，在空白处填上一个适当的句子，使对话的意义连贯、完整。

A: You look tired. 1.______________?

B: Well, I can't stand my neighbor.

A: But what happened?

B: 2.______________. and I can't fall asleep.

A: Oh, so he did last night, right?

B: Yes. He sang with his friends until 12 o'clock last night.

A: 3.______________.

B: But I don't know what to say.

A: It's easy. Just say like this, "4.______________?"

B: 5.______________?

A: I don't think he will get mad. You should try to be polite.

B: Perhaps I should.

If you have questions to ask, you can call me _________ 5386714.[ ]

A. with

B. of

C. about

D. at