Правило: since и for.
В каждом предложении выберите подходящий по смыслу предлог (since или for).Например: We've been working here (since / for) this morning. – We've been working here since this morning.
1. You haven't smoked sincefor two months.
2. I haven't slept sincefor 48 hours.
3. I haven't worked sincefor a mounth.
4. My boss has been away sincefor half a day only.
5. They haven't visited us sincefor Christmas.
6. She has been in hospital sincefor Monday.
7. They have been ill sincefor Monday.
8. Jane hasn't been back to Hungary sincefor last year.
9. He worked at that company sincefor ten years before he retired.
10. They've been in love sincefor three weeks.
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