1. I (to read) a book now. I (to read) it since 6 in the evening.
2. Michael (to like) sports. He (to do) sports since his childhood.
3. I (not to know) how to solve this problem. I (to think) of it for the whole day.
4. My friends (to travel) around Africa for two months already. They (to call) me from Cape Town this week.
5. Mother (to make) pies since morning. She just (to bake) a delicious cherry-pie and now she (to make) an apple-pie. I (to adore) her pies.
6. He (to play) computer games for three hours already?
7. How long you (to watch) TV yet?