题目内容

NO

A. Having a family clean-up party.
B. Disposing of trash properly.
Cutting down on waste.
D. Separating different types of garbage.

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A. She cleans a neighborhood park.
B. She collects newspapers.
C. She visits a recycling center.
D. She plants trees with friends.

About 40 years ago.
B. About 30 years ago.
C. About 20 years ago.
D. About 10 years ago.

A. Take pictures.
B. Go fishing.
C. Go swimming.
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A park.
B. A factory.
C. A school.
D. A shopping center.