《2025年暑假乐园辽宁师范大学出版社八年级文综版》

1. He has lived in Nanjing since the year before last.
2. I’ve known him since we were children.
3. Our teacher has studied Japanese for three years.
4. She has been away from the city for about 10 years.
5. It has been about 10 years since she left the city.

答案： 1. since 2. since 3. for 4. for
5. since