—The lights in the classroom are still on. Do you know______. —To revise for the coming exams.
--- Mum, could I play with my classmates for a while after I finish my homework? --- _______. But you must come back before supper.
Finish your homework first, then you'll surf the Internet for half an hour.
---Mum, I cut myself just now. ----You ______put some medicine on it.
You ______ be polite to the old man.
--- Tom, where is your father? --- I’m not sure.He_______ in his office.