I’m going to be late for work. There’re ___ buses on this route(线路).
There are more than fifty _________ in our school.
Lucy is ________ university student. She likes playing _______ piano.
This kind of cup _______ of paper.
—Morn, must I clean my room now? —No, you. You can do it in the afternoon.
Tony, ________, or you will get heavier.