Question

You _______ cross the road when the traffic lights are re

You _______ cross the road when the traffic lights are red. A．can B．must C．mustn’t D．needn’t

Answer 1

C

试题分析：句意：当交通灯是红灯时，你禁止穿过马路。Can能够；must必须；mustn’t禁止；needn’t不需要。