Don't go out alone at night.You ____ go with your friends if you have to.A.needn't B.couldC.may D.mustn't

问题描述:

Don't go out alone at night.You ____ go with your friends if you have to.A.needn't B.could
C.may D.mustn't

B could
晚上不要单独出去,如果你一定要出去的话,你可以和你的朋友一起走.