情态动词must/mustn't表达交通规则 — 英语选择题
题目
Look at the traffic rules board. Which sentence tells people NOT to do something on the road?A. You must look at the traffic lights before crossing the road.B. You mustn't run or play football on the road.C. You must wait for the green man on the pavement.D. You must walk on the zebra crossing.