– May I swim here?. – No, you _________. It’s dangerous. A. won’t B. needn’t. C. mustn’t
—What’re the rules in class? —First, mobile phones can’t be ______.
—Could you please______? —Yes, sure.
—Amy, I’m going to Qufu to travel next week.— ______.
—The weather is foggy again today, ______ it? —Yes, it’s so bad.
—______ is it from your home to school?—About 10 minutes’ ride.