20.1 Вставьте for или since.

1. Helen has been in Ireland **since** Monday. 2. Helen has been in Ireland **for** three days. 3. My aunt has lived in Australia **for** 15 years. 4. Tina is in her office. She has been there **since** 7 o'clock. 5. India has been an independent country **since** 1947. 6. The bus is late. We've been waiting **for** 20 minutes. 7. Nobody lives in those houses. They have been empty **for** many years. 8. Michael has been ill **since** October.