The old man had three sons, all of ____ died during World War Ⅱ.
Every time he tried to start the car, the wheels _____ deeper into the mud.
As the storm drew near, black clouds were _____ over the sky.
It's no _____ arguing about it, because he will never change his mind.
The city was _____ to me, and I didn't know where to go.
The book is not _____ what we paid.