it's bad manners在这里,bad manners是作为单数出现的么?

it's bad manners在这里,bad manners是作为单数出现的么? It's bad manners to ( ) ( )嘲笑others It's bad manners to point at other people中为什么manners要加加”s“如图 It's bad manners not to w ______ in line It's bad manners to spit in public.主语是什么 关于Manner的问题it's bad manners.其中的it's 和manners 一起出现要怎么解释呢? It's bad ___to spit in public.A examples B manners C ways D excuse 请帮忙英语短文填词It's good manners not to shout in public.It's bad manners to be impolite to people.Manners are important to good relations among people._1_likes a person with bad manners.A person with good manners is often ready to help _2 你好 请问是it's bad manners of sb to do sth 还是 it's bad manners for sb to do sth ?我在书上看到是for 但是自己觉得好像of 更对 我现在记不太清楚 也有可能是我记错了 所以特此请教 谢谢 They play on the sands for an hour,and when they returned they found their goods were stolen.问:sand 为什么要加s?It`s bad manners to speak with your mouth full of food.问：这里为什么用manners 而不用manner? I think it's bad manners to run---your parents是run off,run down 还是run out It's bad manners to jump____ queue.A.a B.the C.an D./选A还是B?不要滥竽充数 英语翻译Good manners are very important in our life.It’s easy for people with good manners to get on well with others.Nobody likes those who have bad manners.But what are good manners or bad manners?They are different in different regions(地 Good manners and bad manners It is bad manners to point at others是什么意思 It is bad manners ____(fight)并翻译 It's ___ to speak with one'smouth full of fooda;good mannersb;a bad mannerc;a good mannerd;bad manners It is bad manners to interrupt ,明明是manners,前面为什么用is