You ________ stop when the traffic light turns red.
A. can B. had better C. need D. must
You ________ stop when the traffic light turns red.
A. can B. had better C. need D. must
D
【解析】本题考查情态动词的辨析。句意为:当交通灯变红,你“必须”停下来。根据语境可知此空意为“必须”,四个选项中,只有must具体有此意,故选D