()1. The beach was messy and dirty five years ago.
()2. Broken glass made the beach messy too.
()3. We should put rubbish in the bin to keep the beach clean.
()4. There is a sign "No swimming" on the beach.
()5. Everyone should follow the rules(规则).

()1. Do you throw rubbish into the river? ()2. What makes our classroom messy?
()3. Can we keep our city clean? ()4. Would you like some coffee?
()5. We can plant more trees every year.

七、词汇。(13分)
(一)根据首字母提示填空。(4分)
1. Be ! There is some water on the ground.
2. The river was not clean last year. There was a lot of rubbish and fish in it.
3. Put your clothes in the basket. They make the room messy.
4. There are many in Wuxi. Let's go and visit them.
5. Yang Ling was ill and she went to the last night.
6. more trees can help keep the air clean.
7. We should put rubbish in the .
8. Mike in a small town when he was young.

1. It's a place. There are lots of old things there. You can watch them, but you can't touch or take pictures of them. It is a .
2. It's a thing. You can put rubbish in it. It's a container(容器) for waste. It is a .
3. It's a place. You can sit down, walk, ride or drive on it. It's the surface(表面) of the Earth. It's .
4. It's a building. People make things in it. It's a .

1. Bobby rubbish on the floor just now.
2. It rained yesterday and I and fell in the street.
3. Shanghai is one of the biggest(最大的) in the world.
4. The always made a lot of smoke five years ago.
5. The old man often in the park on Sundays.

()1.What should you do ______ study well?
A.to
B.for
C.of
D.about