问题
选择题
For the safety, everyone _________ obey the traffic rules when he is driving or walking.
A.need
B.must
C.may
D.could
答案
答案:B
题目分析:句意:为了安全,每个人必须遵守交通安全,当他开车或走路的时候,A. need需要; B. must必须; C. may 可以;D. could能会;结合语境故选B