they have been living here for four and a half years同义句

they have been living here for four and a half years同义句 We have been living here for 12 years.(改同义句） They have been married for 15 years 同义句 I have been collecting shells for three tear and a half同义句转换 My uncle has been living here for twenty years.(改为同义句） They have been friends for 6 years. 改为同义句 They have been fri I have lived here for 5 years I have been living here for 5 I have been living here for 2 years I have lived here for 2y they have been away for six years如何改为同义句 six years ____ ____ they have been away from here since two years ago同义句 ___ ___ They have waited here for half an hour的同义句 They have been collecting shells for there years.（改为同义句）