—Do you know the song Come on, Haixi!—Yes, and I _________sing it well.
A. must B. can C. need
—Must I return the hook tomorrow morning? —No, you _ .You can keep it longer.
A. mustn't B. can't C. needn't D. couldn't
—Sorry, Mum. I won’t again.
A. need B. must C. can D. may
—________ I smoke here?
—No. You are not allowed to smoke in public places.
A. Could B. Must C. May D. Might
You look quite tired. You’d better ______ a good rest.
A. stop to have B. stop having C. to stop to have D. to stop having
— _______ we clean the classroom at once?
— No, you _______. You _______ clean it after school.
A. Must; needn’t; may B. Must; mustn’t; can. C. Shall; can’t; must D. Need; mustn’t; may
