— Do you know in ancient China?— I have no idea. But I know people once used tree leaves to make paper.
Sam spends two hours _______ his homework every day.
—Could you pass _______, please?—Certainly. Here you are.
The motto of the modern Olympics is “_______. ”
_______important for us _______ English well.
—What’s your hobby?—I _______ listen to music, but now I enjoy dancing.