Buat 5 contoh kalimat notice!

1. Please keep the door closed.
2. Help us create a clean air environmemt, Smoke only at the designated smoking area.
3. Due to sharp coral visotors are prohibited from swimming along this area.
4. Articles are considered sold if you break them.
5. No littering, Please use a trash can.

#Don't remember, Be best My answer please.. (Jangan lupa, tolong jadikan jawabanku yang terbaik)
Thank you
3.