Question

【题目】For the safety, everyone _________ follow the traffic rules when he is driving or walking. ( )

A.needB.mustC.mayD.could

Answer 1

【答案】B

【解析】

句意：为了安全起见，每个人在开车或走路时都要必须遵守交通规则。A. need需要，B. must必须，C. may可能，D. could能，根据题意，故选B。