Answer:
I go in dry and come out wet. The longer I stay in, the stronger my surroundings get. What am I?
I have a mouth on my head and eat everything.
Mr. Red lives in the red house. Mr. Blue lives in the blue house. Mrs. Pink lives in the pink house. Who lives in the white house?
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
I run up and down the stairs without moving. What am I?
I will disappear every time you say my name.