Вставьте since или for.1. I’ve known him … a long time.2. We’ve been on holiday … three weeks.3. He’s been a stu­dent … four years.4. She hasn’t been to work … July.5. She has been ill … a fortnight.6. They have been divorced … last year.7. We have been very busy … Christmas. 8. My grandmother has been a pen­sioner … five years. 9. He has been away … a month.