— Could you tell me how to get to the National Stadium?— Sorry, I’m not sure . _____ ask the policeman over there?
—What _______ heavy rain it was! —Yes, but I love _______ air after it rains. It smells so fresh.
—What do you think of the books by Luxun? —They are wonderful, but I’ve read of them.
This is the best film I have _______ seen.
—I’m sorry I _______my homework at home.. —That’s all right. Don’t forget _______it to school this afternoon.
—Where is Li Mei now?—She _________ to Canada. She will be back in two days.