Answer:
What room do ghosts avoid?
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
I have four fingers and a thumb, but I'm not living. What am I?
I am a shower that lights up the sky
I am a kind of coat that can only be put on when wet.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.