—Some young people like reading novels on their mobile phones after turning off the light at night.—Don’t you think it is to their eyes?
Xi’an is a city with many places of interest and _____ tourists come here every year.
—_____ you _____ your homework yet? —Yes, I _____ it ten minutes ago.
—What are you reading about? —It’s about the one-child policy. It says that the policy has_____controlling the population in China.
—Have you cleaned your room_____? —Yes, I’ve_____cleaned it.
—When did the Greens come to China? —They_____ China for seven years.