What did you say in these situations?

What did you say in these situations?
Example:
Your friend is riding his bicycle carelessly.
You say: “Ride carefully./Don't ride carelessly.”

1. Hung is putting his feet on the bench.

    You say: ”...........”

2. You don't want your friend to tell anyone about this.

    You say: ”Please............... ”

3. You mother doesn't want you to go out at night.

    She says: ”........”

4. Duy doesn't say ”thank you” to people who help him with something.

    You tell him: ”Duy, ...............”

5. Phong is sitting in his room watching TV for a long time, and doesn't go out for fresh air.

    His mother says: ”Phong, ..........”