1-5 ACCAB 6-10 CBCBA 11-15 CACBA
16-20 CACAC 21-25 DDDAC 26-30 DBADC
31-35 DDCAA 36-40 DCDAB 41-45 ABABC
46-50 BAACA 51-55 ADCAA 56-60 ACDCA
61-65 CDBDC 66-70 CACAB 71-75 CAACC
76. ways后加to 77. any改为some 78. that改为which
79. Comparing改为Compared 80. take改为takes 81. √
82. us改为ourselves 83. as改为like 84. 去掉simple
One possible version：
I’m a senior high student. In my opinion, the classroom is a place for students to gain knowledge. Therefore quietness is badly needed for us to learn our lessons. But recently some students bring their mobile phones to the classroom and we often hear the ring of mobile phones. Some of them even waste precious time in class typing short messages on the mobile phone.
To keep the classroom quiet, those with mobile phones should not talk on the phone or send short messages. They should turn them off. We are supposed to concentrate on our studies.
M: Someone told me Ann’s going to become a manager in her father’s company.
W: She isn’t, is she? She’s so young. And she still has a lot to learn, doesn’t she?
M: She sure does, but I guess her father doesn’t think so.
M: Well done! The job is well done.
W: It certainly is. It seems that he is quite experienced and skillful.
M: I hear you are going to drive to New York this weekend.
W: Oh, I have changed my mind.
W: I think flying will be more comfortable.
M: Does your television need to be repaired?
W: No, my telephone needs to be repaired.
M: Please change this note into three 20-dollar bills and four 10-dollar bills.
W: Sure. Twenty, forty, sixty, seventy, eighty, ninety, one hundred. Here you are, sir.
M: Thank you very much.
W: So, how are things going, Steve?
M: Well, I was feeling great on Saturday, but I started to feel sick on Sunday afternoon. I thought I’d get better, but I feel worse than before.
W: What seems to be the problem?
M: Well, the doctor said it was just a bad cold. He gave me some medicine and told me to take it three times a day after eating, but it doesn’t seem to help.
W: Listen, forget about that medicine! Just drink some of my mum’s tea and you’ll be up and dancing around in no time.
M: Dancing around in no time, right? Well, I guess nothing else seems to be doing the job.
W: I’ll come to your place at 7:30. See you then.
W: Hello. This is the emergency 911 operator.
M: Help, help!
W: Please calm down and explain exactly what is happening.
M: Calm down! My car has broken down on the freeway. I have a lady passenger, and she’s going to have a baby.
W: Explain exactly where you are.
M: I’m... I’m on the southward road of the Lincoln Expressway, about 15 miles from the Washington Tunnel, and this lady isn’t going to wait.
W: OK. What’s your name, sir and your passenger’s?
M: It’s... It’s Bob, and I have no idea about the woman. She is in no condition to tell me.
W: I’ve just sent an ambulance to your position. They should be there any second.
M: Hey, is there anything I can do while we wait?
W: Uh, yes, keep her calm and warm.
M: Help! Yeah, uh, it was wild, I mean really strange.
W: Calm down, sir! Tell me exactly what happened.
M: Well, I was driving home from a party about three hours ago, so it was about 2:00 am, when it was this bright light overhead.
W: OK. And then what happened?
M: It was out of this world. I stopped to watch the light when it disappeared behind a hill, a kilometer ahead of me.
W: Then what?
M: Well, I got back in my car and I started driving towards where the strange machine landed.
W: Perhaps you only saw the lights of an airplane, or the headlights of a car coming closer. Things like that happen, you know.
M: I kept driving for about five minutes when suddenly, a huge animal jumped out in front of my car.
W: Oh, yeah. Then what?
M: Well, then, the animal picked up the front of my car and said, “Get out of the car. I’m taking you to my master!” something like that.
W: Wow? An animal who can speak English! Come on!
M: Then, when I didn’t get out of the car, the animal opened the car door, carried me on his shoulders to this round-shaped flying saucer, and well...
W: OK, that’s enough.
W: What’s the matter with the clock radio? It didn’t work this morning.
M: I guess something must be wrong with it.
W: What time is it now?
M: Let me look at my watch. Oh, it’s nine-thirty already. Today is Saturday, you know.
W: I got confused about the days. But anyway, it’s time for us to get up, or we’ll have a real late breakfast.
M: We can have a brunch in a Chinese restaurant for a change.
W: What is a brunch?
M: It’s a meal between breakfast and lunch. Many people prefer brunch on Saturdays.
W: All right. Come on. What are you going to put on?
M: Jeans, a sweater, boots and my heavy coat.
W: You don’t have to wear that much. It’s warm today, much warmer than yesterday.
M: How do you know?
W: I listened to the weather forecast on TV last night. You can open the window and feel it yourself.
M: I guess you are right. Where are my socks?
W: How do I know?
Brain and Kevin are twin brothers. They are also nearly the same height and weight: tall and slim. They even sound the same when they speak. They each have red hair that, at that time, they kept cut short in the same style. Few years ago they both decided to teach English at the same college in China. By strange luck, they taught the same course to students in the same grade. Of course, they each had their own class to teach! One April Fool’s day they decided to play a trick on their students. So they wore each other’s favorite clothes and taught each other’s class. Most of the students never realized what had happened, but a few did manage to figure it out. These students tried not to laugh aloud and didn’t bother to take notes. That was their reward for paying attention and being so clever. Still, all the students who were fooled thought it was really funny too!