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信息发布者：

A

A

B

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C

B

B

A

B

B

一、作业精灵老师示例：

1. It's Sunday.

2. No, it isn't.

3. Rubbish makes our city dirty.

4. Yes, it is.

5. Rubbish.

6. We can sweep the floor.

7. No, we can't.

8. In the bins.

9. We can plant more trees.

10. By bike or on foot.

作业精灵老师示例：To make our city clean,

we can walk or take the

bus to the school. We

should put rubbish in the

bin. We can plant more

trees. We can move

factories away from our city. To keep the

Earth clean, we have many things to do.

作业精灵老师示例：

My bedroom is messy

and dirty. Rubbish makes

it dirty. I should put my

toys in order. I can sweep

the floor to keep the room

clean. I can put my clothes

in the box.

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