Can you find out the missing number in the grid?

Find the Goldfish below the given Image.

What will you call your mother's brother's brother-in-law?

What goes through cities and fields, but never moves?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

There is a place where if I stand up straight, I will still be considered sideways.

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

What is the riddle which can be asked all day with a different correct answer each time.

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?