as is well-known to everyone,the 29th Olympics will take place in Beijing.1.为什么不是as being well-known.2.为什么要用take place 而不能用be held第一个 还是没弄清楚

As is well known,machines need to lubricate. Tomas Edison is well-known ___inventions____a great inventor A to;as B for;as C as;to D to;for Beijing is well ()its beautiful scenery amd the great wallA KNOWN AS B KNOWN TO C KNOWN ABOUT D KNOWN FOR As is well-known,China has the largest population,中As is well-known 是什么从句 as it is well known 和 as is well known的句子结构区别? 是as is known to...还是as iT known to... __is well known to all,the earth is round填as or it or that Beijing is well-known _______ the capital of China while Hangzhou is well-known 请解析Beijing is well-known _______ the capital of China while Hangzhou is well-known _______ the West Lake.A.for; as B.as; for C.for; to D.as; to As is well known to us all that the earth is round.这个句子是正确的吗? It is such a good place__________everybody wants to visit ____it is well-known.a.which;thatb.that;as It is also well known as an international city. as is known to everyone对不对,众所周知 It is well-known newton one of the greatest scientists.is known for is known as is known to is known by As is known（在句首时）后面只能跟to As is known to be... _____ is well known to everybody is that Nanning ,Wuhan,Changsha and Chongqing are extremly hot in summer.A.It B.as C.that D.what 答案选what,as is known to everybody,it is known to everybody that,what is known to everybody is that 不是都适用 ----is well known to us all that Taiwan belongs to China.--- is known to us all ,Taiwan is part of--is known to us all that Taiwan is part of china---is known to us all is that Taiwan is part of chinaA.it B.As C.That D.what四题应选什么,为什 as is known to all中的as是什么词性