Điền cụm từ với “for”, “since” hoặc “ago”.
1. The phone last rang at four o’clock. ~ So you’ve had no calls _____?
2. I haven’t been to the dentist for ten years. ~ You last went to the dentist_____?
3. I last saw Rita on Sunday. ~ Haven’t you seen her _____?
4. We’ve had six weeks without rain. ~ Yes, it hasn’t rained_____
5. It’s three years since Lisa got married. ~ Really? Has she been married_____?
6. It’s eight months since my sister had any work. ~ He lost his job_____?
7. Mrs. Brown was taken ill three weeks ago.
~ You mean she’s been ill_____, and nobody’s told me!
8. I got here an hour ago. ~ What! You mean you’ve been waiting _____an hour?
9. I have not seen him_____ he was 16.
10. I've known him _____ages.
11. Things have changed a lot_____ our previous meeting.
12. It's been raining_____ four o'clock.
13. I'm sure he's been watching us _____we came in.
14. He'd been here_____ over an hour when we arrived.
15. I've been trying to fix this computer_____ early this morning.
16. He hasn't had anything to eat _____ nearly a week.
17. It's three years_____ he started learning German.
18. He's been collecting stamps_____ the past twenty years.
19. Nobody has seen him_____ last Friday.
20. It has been foggy _____ some days.
21. He has been fishing_____ six o'clock.
22. They've been living in France _____ eight years.
23. The pilots have been on strike _____ two months.
24. We've had terrible weather _____ Saturday.
25. I've known Tom _____ 1990.
EX : 1. since four o'clock ( Since + mốc thời gian <thời điểm trong quá khứ> )