按要求写句子5]9R8\5n1L-}2c7X(_6@7M
He`s sitting down now（变为否定句）5]9R8\5n1L-}2c7X(_6@7M
6K2C8D(u:n-Z(y1|9o5]9R8\5n1L-}2c7X(_6@7M