麻烦老师解答：It is known that wat

麻烦老师解答：It is known that wat it is well known that 麻烦老师解答：It's a pity that I m it is well-known that,还是it is well known that 麻烦老师解答：That's really ______ it is known to all that 和as is known to all that 区别 麻烦老师解答：It was foolish _____ 麻烦老师解答：填空题.1.It' 麻烦老师解答：It was his studying 麻烦老师解答：句型转换. It's 麻烦老师解答：用it / one填空. 麻烦老师解答：阅读理解 It