But water,___is well known,can also exist as a gas or a solid.
题目
But water,___is well known,can also exist as a gas or a solid.
填定语引导词.我觉得该填as~不过想想which也可以吧?
答案
AS
as is well known,固定用法.
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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