问题: As we all know,the success of all scientists.....
As we all know,the success of all scientists lies in their hard work.
____ _____ _____ _____ ______ ______ the success of all scientists lies in their hard work.
答案是：It is known to all that,请问为什么要填
to all?
谢谢浏览者和回答者！
解答:
实际上，It is known that / It is well known that 都是可以的，可是问题中有提及每一个人都知道（As we all know），所以我们要加上“to all”的。
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