It's ____ to talk loudly in a reading room.A.good mannersB.bad manners C.a bad manner D.a good manner 怎么区别有S和无S

问题描述:

It's ____ to talk loudly in a reading room.
A.good mannersB.bad manners C.a bad manner D.a good manner
怎么区别有S和无S

A

c

b
bad manners
词组

It's bad manners to talk with a full mouth.
嘴里吃着东西说话是不礼貌的

以这种句型选择都是用复数的