改错It's known that Shanghai is the first largest city in China.

改错It's known that Shanghai is the first largest city in China. it 's well known that 还是it 's well-known that 改错改错Is that a pencil case?Yes,it's. it's well known 单句改错 It is known to us that reading books widen our knowledge哪里错了? It’s known to all that.把it换成what,that后面为什么要加上is. it is well known that may it be known that 改错：Look at that!It's an UFO. It's said that从句是被动语态,怎么It's known to us that从句却不是? It s____ that they have known it It is well-known that the Nansha_____（岛）is our country's in history.RT it's well known that zhou jiulun is a singger who is popular with the young 请问句型It's known to us that从句是被动语态吗?请问句型It's known/well-known to us that从句,是被动语态吗?若是,怎么这里用TO US,不用BY US? 把下列句子改错!我要所有答案,并给我说说是怎样改错的!紧急!1.We have been in China for three years ago.2.I have bought the book for a week.3.Where have you gone,Jane?4.You ought not to throw about it.5.It's known that Mingming That is known to all,Taiwan belongs to China.改错 it has long been known that it is known to all that smoking is harmful to one's health “ that” 作什么成分啊?