根据短文内容，选择正确最佳答案。
American Classroom Rules
1. If the teacher asks a question, you should give an answer. If you do not understand the question, you should put up your hand and ask the teacher to repeat the question. If you don’t know the answer, it’s all right to tell the teacher that you don’t know. Then he or she knows what you need to learn.
2. There is no excuse for not doing your homework. If you can not go to school, you should call your teacher or your classmate and ask for the homework. It is your responsibility（责任）to find out what homework you have missed. It is not the teacher’s job to remind you of missed homework.
3. You must not be absent(缺席) on a test day. If you are badly ill, call and let the teacher know you will not be there for the test. If your teacher allows you to take a makeup, you should take the test within one or two days after you return to class. Bad illness is the only reason for missing a test.
4. Be on time! It’s not polite to be late. Also, it bothers other students. If you must come in late, be sure to do it quietly. Have your books out of your bag before you come into the classroom. Then go to your seat and sit quietly. In the US, it is not necessary to knock at the door before you come into the classroom.  
【小题1】If you can not go to school, __________.

(F="Father;" T=Tom）

F: Has everything been ready, Tom? (1)___________

T: Yes, I think so.

F: Have you packed your bag?

T: (2)_________

F: Have you fed the dog?

T: Oh, no. I forgot. I’ll do it now.

F: Have you said goodbye to your teacher?

T: (3)_________

F: Have you brought a guidebook?

T: Do we need to?

F: (4)_________

T: Okay. I’ll take one.

F: (5)_________ Oh yeah, have you watered the plants yet?

T: Mom did it.

F: Now, we are ready. Let’s go!

 (Doctor=D, Woman=W)

D: Good morning. What's your trouble?

W: I don't feel very well.

D:____1___

W:Yes, I have. My temperature is a little higher.

D:Open your mouth and say, "Ah".

W:Aahh.

D:____2____

W:Ever since last night.

D: Did you sleep well?

W:No. I was very tired last night.

D: Oh, I see.___3_______

W:Can you tell me how I got a cold?

D: Maybe you are too tired.

W:Ｉthink so. I have too much work to do every day. Do I have to stay at home?

D:Yes. You'd better stay at home for two or three days.

W: _____4_____

D: No, I don't think so. But you really need a good rest and take the medicine.

W:______5__

D:Three times a day.

W:OK. Thank you.

A.You've got a cold.

B.How often do I have to take it?

C.Have you taken your temperature?

D.How long have you been like this?

E.Is it serious?

1._________2.________ 3.__________4._________ 5.___________