Answer:
What kind of room has no doors or windows?
What five-letter word becomes shorter when you add two letters to it?
Roast, boast, coast, post. What do you put in a toaster?
What is black when you buy it, red when you use it, and gray when you throw it away?
I am what brings things together. Without me everything you see would be a total mass or debris everywhere. What am I?
Give it food and it will live, give it water and it will die.