---Can you speak Japanese?
---No, I_______.
A. mustn’t B. can’t C. needn’t
You_____ go and see a doctor at once because you’re got a fever.
A. can B. must C. would
---May I take this book out? ----No, you______.
A. can’t B. may not C. needn’t
That boy _______ be Peter. He has gone back to England.
A. mustn’t B. can’t C. needn’t
John _______ come to see us tonight, but he isn’t very sure yet.
A. may B. can C. must
— Please don’t smoke here. — Sorry, I______ do it again.
A. may B. may not C. will D. won’t