It is bad ___ to speak with your mouth full.A way B manner C manners D methods
问题描述：
It is bad ___ to speak with your mouth full.A way B manner C manners D methods
答
C manners 为正确选项.
It is good / bad manners to do sth =It is polite / impolite to do sth,做某事是礼貌/不礼貌的.
这里的manners必须是复数.
【俊狼猎英】团队解答.