改成同义句：They have known each other for six years .

同义句转换They have known each other two years. 写出同义句We have known each other for ten years.We _______ _____ We have known each other for two years如何改为同义句? They have know each other for 10 years.同意句 I have known Cathy for over twenty years.同义句 改成：I have known 同义句转换：It seems that they have known each other .They ___ ___ they have been away for six years如何改为同义句 six years ____ ____ ____have known each other for ten years. ___have known each other for ten years They have know each other for 10 years.同意句 The have know eac We have known each other for two years.对"for two years"提问 known,how long,have they,each other