— These grapes look really beautiful.— They _______! See the price $3.99 a pound. Very expensive, aren’t they!

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.

---Must Jack come to sign his name on the paper?---Yes, he_____ .

 When Marx was in London, he  __   read at the library for hours.

You _________ drive on when the traffic light is red.