Дополните предложения: i've been here three days last thursday. we have been to australia. they haven't packed their luggage ? have you bought a return ticket ? they have arrived at the airport. have you seen oleg ? have you heard from jane ? they have viseted five foreign countries. i'am not sure he has caught flight 415. здесь надо вставить слова: alredy, just, ever, never, for, since, recently, today, this weak.