– Must I return this book tomorrow? -- No, you _______. You can keep it until next week A can’t B. needn’t C. mustn’t D. shouldn’t
Though it was late, _____he went on with his work.
He has a friend who_____the piano very well.
I____singing to dancing.
“Help _____to some fish。” Mrs Smith said to the children.。
That is a watch of______.