—According to a research, smoking is bad for our health.—Yes, especially for teenagers. Students _______ to smoke.
David, get up early, ________then you’ll catch the early bus.
—Where is Jack? — In the sitting room. He _______ TV with his brother.
He will give me a message when he ________ arrive there.
— Must I finish my homework now?— No, you ________. You can go home now.
— do you go to visit your grandparents? — Once a week.