III. Fill in the blanks with “since” or “for”:
1. It has been raining ................................... lunchtime.
2. My boss will go away ................................... the next ten days.
3. I'm staying in England ................................... a year.
4. She has lived in London ................................... 1985.
5. Please hurry up! We have been waiting ................................... an hour.
6. I have known her ................................... January.
7. Nam's father has worked in this company ................................... 20 years.
8. Have you learned English ................................... a long time?
9. I haven't seen Tom ................................... we left school.
10. The house is very dirty. We haven't cleaned it ................................... years.
11. My sister has been a student ................................... two years.
12. We've lived here ................................... 1990.
13. I haven't seen Linh ................................... my birthday party.
14. She has been away ................................... a year.
15. We've already waited ................................... five days.
16. They haven't had any rain ................................... very long time.
17. That buildings has been there ................................... the 19th century.
18. I have known them ................................... many years.
19. They have only been there ................................... a few minutes.
20. My brother works for a company called FPT. He has worked for them ................................... he graduated from university.
III/ fill in the blank with Since or For
1. My sister has been in HaNoi ...since..........last Sunday
2. We haven't seen her......since.... Last January
3. We have read this book.....since.......5 o'clock
4. I have known him......since......we were at the high school
5. They have played football.....since.... 9 a.m
6. Linda went to work in Pairs two years ago, and we haven't seen her......since then.....