A: you MUST/MUSTN T put your hand up to ask a question B: what s the matter, officer ? you MUST/MUSTN T park your car here C: you MUST/MUSTN T do any sports D: you MUST/MUSTN Tbuy a ticket before
A. You must put your hand up to ask a question B. What s the matter, officer? You musn't park your car here C: You must do any sports D: You must buy a ticket before