It's bad manners not to w ______ in line

It’s good manners not to shout in public.It's bad manners __ It's bad manners to spit in public.主语是什么 请帮忙英语短文填词It's good manners not to shout in public.It's bad m It's bad manners to ( ) ( )嘲笑others I think it bad manners to smoke in a reading room.为什么不用it's, it is good manners to wait in line.既然是is 后面为什么是manners （mann I think it's bad manners to run---your parents It's bad manners to point at other people中为什么manners要加加”s“ 你好 请问是it's bad manners of sb to do sth 还是 it's bad manners f 三个英语问题1.it's (bad manners)/(a bad manner) to talk loudly.略答案 在公共场所排队等候是文明行为 It's good manners to_______in the line in the It's good manners to wait in l_____.