当别人帮助了你, 你应该说 ____A. OK. B. Nice to meet you. C. Thank you.
—I think sixteen-year-olds should be allowed to drive. —______. They aren’t serious enough at that age.
—Let’s visit the sick children in hospital and ______. —OK, let’s go.
—What are you listening to? —A song by Huo Zun. It ______ beautiful.
—I’m busy with my schoolwork these days. —That’s great! You won’t get good grades ______ you work hard.
—Whose pencil box is this? —It _____ be Tom’s. It has his name on it.