The food smelt terrible but Tom _______ taste it.
—Could we go and watch the football game? —No, ______ you have the tickets.
—Can I go to the park, Mum?—Certainly. But you ______ be back by six o’clock.
—I’m leaving now.—______ you turn off the lights and the computer.
The population problem may be ______ one of the world today.
Don’t ______ so often. It’s bad for your health.