4. A: Which is___________(fast), a bus or a bike?

　 B: A bus. But a car is____________ (fast) than a bus. So a car is___________(fast) of the three.

3. My brother is____________ (young) in my family, but he is____________ (tall).

2. The first question is____________ (easy) one in this exercise.

1. A: Which ball do you want?

　 B: I want the yellow one. It’s___________ (good) of all.

Our classroom is on the second floor. It has four windows and too doors. There are two blackboards in it. One is on the front wall and the other is on the back wall. The teachers’ desk is in front of the students’ desks. Our classroom is bright and clean. We love it very much.

4. out of　　　　 5.after　　　 6.between

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Keys

I am Sue Smith. I w________ in a hotel in London. It is n _________Central Station. I go to work b　　　　　 car every day.

My hotel is v　　　 big. There is a beautiful(美丽的) g　　　　　 in front of the building. There are seventy r　　　　　 　in the hotel building, and three restaurants(餐馆) and five bars(酒吧). B　　　　　　 the building there is a swimming pool. It is o　　　　　 　every day. In s_______ there are always a lot of people swimming in the pool.

I love my work. And I love my h　　　　　 , too.

5. We use heat only to keep ourselves warm.

4. We bum our bodies to make heat.