1. (-): Don't play games for more than two hours.

(?): Do you play games for more than two hours?

2. (-): Don't throw away trash on the beach.

(?): Do you throw away trash on the beach?

3. (-): Don't cut down trees.

(?): Do you cut down trees?

4. (-): Don't feed the animal in the zoo.

(?): Do you feed the animal in the zoo?

5. (-): Don't eat ice-cream in the winter.

(?): Do you eat ice-cream in the winter?

6. (+): Turn off the lights and air-conditioners.

(?) Do you turn off the lights and air-conditioners?

7. (+): Recycle old newspaper.

(?): Do you recycle old newspaper?

8. (+): Pick up trash on the school yard.

(?): Do you pick up trash on the school yard?

9. (+): Reuse plastic bags.

(?): Do you reuse plastic bags?

10. (+) Copy your friend's homework.

(?): Do you copy your friend's homework?