Дополните предложения: I've been here three days …

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 помогающие слова: alredy, just, ever, never, for, since, recently, today, this weak.