句型转换 As is known to everybody, the 9.11 incident did great damage to American ec
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句型转换
As is known to everybody, the 9.11 incident did great damage to American economy．(同义句转换)
________ ________ ________ ________ ________ ________ the 9.11 incident did great damage to American economy．
试题答案
答案：It,is,known,to,everybody,that