Minta tolong di jawab ya secepatnya

1. (?) Is Roman cheating on the exam?
2. (+) Maria baking cookies in the kitchen.
    (-) Maria isn't baking cookies in the kitchen.
3. (?) Is Jaya sing a song in the bathroom?
     (+) Jaya is singing a song in the bathroom
4. (?) is Shinta watering flowers in the garden?
    (-) Shinta isn't watering flowers in the garden
5. (-) The man is not selling mangos in front of the store.
    (?) Is the man selling mangos in front of the store?