When traffic lights are red ,cars__ stop and wait .A may B can C must D might选择

问题描述:

When traffic lights are red ,cars__ stop and wait .A may B can C must D might
选择

c,必须

C

选C

C must

当红灯时,车 停下并且等待 A可以 B能 C必须 D允许(没有must语气强)
选 C must

c
必须 ,命令,语气最强!