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第98页

信息发布者：

drive

bad

dirty

use

much

rivers

fish

trees

clean

help

To protect the Earth, we should plant more trees.
To protect the Earth, we should turn off the tap when brushing our teeth.
To protect the Earth, we should reuse or recycle bottles.
To protect the Earth, we should walk to school more often.
To protect the Earth, we shouldn't cut down too many trees.
To protect the Earth, we shouldn't litter.
To protect the Earth, we shouldn't drive too much.

To protect the Earth, we shouldn't use too many plastic bags or plastic bottles.

1. b
2. e
3. a
4. c
5. d