It is weii known that Taiwan is a part of China

It is weii known that Taiwan is a part of China It is well-known it is well known that it known to all还是it is known to all as is known,it is known不同用法? As is known 还是It is known英语 ( )is said( )a new library weii be built in our city.A.that thatB.it thatC.it asD.that what 是as is known to...还是as iT known to... Jim：M-A-R-Y.Bob：＿that?jin：Weii,it＇s her dog.＿ ＿Jim：M-A-R-Y.Bob：＿that?jin：Weii,it＇s her dog.＿ ＿is Dudu. it is well-known that,还是it is well known that到底是哪一个?well known和 well-known有什么区别？ as it is well known 和 as is well known的句子结构区别? it is known to all that 和as is known to all that 区别 As is known to us.和It is known to us.后面接什么啊?为啥 It Is known to us 和as is known to us 有什么区别 如何区别As is known to all与It is known to all? This is inportant to learn English weii.怎么改错? it is a lot of fun to play with tha panda .同义句转换______ ______it is to play with tha panda . tha box is so heavy that I can not carry it