阅读理解。 Dear Mom and Dad, I'm afraid I have some very bad news for you. I have been very naughty and the school master is very angry with me. She is going to write to you. You must come and take me away from here. She does not want me in the school any longer. The trouble started last night when I was smoking a cigarette in bed. As I was smoking, I heard footsteps coming towards the room. I did not want a teacher to catch me smoking, so I threw the cigarette away. Unfortunately, the cigarette fell into the waste-paper basket. It caught fire. There was a curtain near the waste-paper basket. It caught fire too. Soon the whole room was burning. The master phoned the fire brigade (消防队). The school is a long way from the town and before the fire brigade arrived, the whole school was on fire. The master said that the fire was all my fault and I must pay for the damage. She will send you a bill for about a million dollars. I'm very sorry for this. Much love Sarah 1. Why did Sarah write to his parents? [     ] A. He missed them very much for they hadn't seen each other for a long time. B. He told his parents what he had done in school. C. He was tired of studying, and wanted to leave school. D. He thought he was old enough to help them do something. 2. Where did Sarah smoke? [     ] A. in the classroom B. in the dinning hall C. in the street D. in the dormitory 3. Why was the school master angry with him? [     ] A. because he was too naughty B. because he was too lazy C. because he caused a big fire D. because he stole something from the school 4. According to the passage, what should the students not do? [     ] A. they should not smoke, because smoking is dangerous to them B. they should not dance, because dancing would waste a lot of money C. they should not make friends, because making friends would take them absent D. they should not wear expensive clothes because they would waste a lot of money