一、用 for 或 since 填空。
1. Jill has been in Ireland ______________ Monday.
2. Anna has been in Paris ______________ 3 days.
3. My aunt has stayed in Australia ______________ 15 days.
4. Margaret is in her office. She has been there ______________ 7 o'clock.
5. Mike has been ill ______________ a long time. He has been in hospital ______________ October.

1. since 2. for 3. for 4. since 5. for; since