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've read two books sincefor the weekend.
4. She has been in hospital sincefor Monday.
5. He hasn't played the piano sincefor he was a boy.
6. Dinosaurs have been extinct sincefor over 60 million years.
7. Jane has worked here sincefor two weeks already.
8. These cherry trees have bloomed every spring sincefor 1980.
9. I haven't talked to him sincefor last week.
10. Joe and Josephine have been going out together sincefor Valentine's Day.
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