FOR, SINCE ou AGO
1. She went to Brisbane three years ..........
2. We have been learning English ............. six months
3. I met her a long time .............
4. She has been working on this translation ............... a few hours
5. He has been watching TV ................. 6.00 p.m.
6. Three days ................. he started reading a book
7. It has been a long time ................ I met her
8. She has been singing ................ hours
9. Tom has been sleeping ................ yesterday
10. The weather has been very fine ................ the beginning of June