1. Somebody (call) you.
2. I (work) since 11 this morning. 3. I am sure you (like) him when you see him.
4. I (write) two novels since I left university.
5. How long (you,have) this car? 6. I (tidy) my room by 5 o'clock this evening.
7. I (cook) dinner by the time you come.
8. They (try) to solve this problem for some time but they still ( find) the answer yet.
9. I haven't got my glasses - you may (leave) them at home.
10. She can't (see) him because he is out of the city.