Don't use water to put out the fire if oil catches fire. As is known, oil ________ float on water.

A traffic regulation released in a foreign country states that passengers sharing a car with a drunken driver _____ be punished together with the driver himself.

––I didn’t go to work yesterday because my car broke down.––You _____ mine. I wasn’t using it then.

—Jack, _____ you behave yourself? You're no longer a kid．—Sorry, Daddy．It won't happen again．

If people eat natural plant poisons by mistake, they _______ go to hospital without delay.