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1. Everyone should take care of our whole
2. Riding a bike or joining a carpool can
3. The Earth already has too much
4. Trees can make the air
5.
planet
.2. Riding a bike or joining a carpool can
cut down
pollution.3. The Earth already has too much
trash
.4. Trees can make the air
fresh
and also give you shade
.5.
Check
your water tap(水龙头) to see if it turns off.答案
1. planet
2. cut down
3. trash
4. fresh; shade
5. Check
2. cut down
3. trash
4. fresh; shade
5. Check
