—Must I come before 7:00 tomorrow?—No, you ________.A. needn’t B. mustn’t C. couldn’t
There are different resolutions. Some of them _____ self-improvement.
The math problem is so hard. I really don’t know .
What’s she going to be when she ?
There a talk show on CCTV-3 at 8 this evening.
Lucy often goes to school on foot, doesn’t she?