— Must I return the book this week?
— No, you ____. You can _ it for 20 days.
A. mustn't: keep B. needn't; borrow C. needn't; keep D. mustn't; borrow
—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
