Ответы
1. How many days have you been reading this book?
2. It was only when she was on the train that she remembered that she had left the book at home.
3. They have lived in this house already for 5 years.
4. My sister was sick for several days when I found out about it.
5. Did you know that he did not write the composition?
6. We have not received letters from her for several months.
7. How many years have you been working in this factory?
8. He already left when Lena turned on the radio.
9. I have been working on this problem for three months already.
10. Fortunately, the rain had already stopped when we left.
11. How many years have you been at this school?
12. At eleven o'clock we were still working.
13. At eleven o'clock we were already working three hours.
14. I have already told you three times to rewrite the exercise.
15. I had been reading for an hour after lunch, when dad came.
16. I will not come. I will write an essay all evening.
17. Where have you been since last Friday?
18. I have been living with friends for two weeks.