Mary: What are you gonna do today?
Nack: I'm gonna clean my room.
Mary: Do you usually clean your room?
Nack: Yes, I do. I clean my room almost everyday.
Mary: Everyday?! Wow. Cleaning your room is your habit.
Nack: Exactly.
Mary: Why do you clean your room everyday?
Nack: Because if my room is clean, I feel happy.