the garden. He (to play) volleyball with his friends. They (to play) since breakfast time. 7. I (to live) in St. Petersburg. I (to live) in St. Petersburg since 1990. 8. This is the factory where my father (to work). He (to work) here for fifteen years. 9. You (to find) your notebook? No! I still (to look) for it. I already (to look) for it for two hours, but (not yet to find) it. 10. You (to play) with a ball for three hours already. Go home and do your homework. 11. Wake up! You (to sleep) for ten hours already. 12. I (to wait) for a letter from my cousin for a month already, but (not yet to receive) it. 13. She already (to do) her homework for two hours; but she (not yet to do) half of it. 14. I (to wait) for you since two o'clock. 15. What you (to do)? I (to read). I (to read) for two hours already. I already (to read) sixty pages. 16. It is difficult for me to speak about this opera as I (not to hear) it. 17. I just (to receive) a letter from my granny, but I (not yet to receive) any letters from my parents. 18. The weather (to be) fine today. The sun (to shine) ever since we got up. 19. Every day I (to wind) up my watch at 10 o'clock in the evening. 20. Come along, Henry, what you (to do) now? I (to wait) for you a long time. 21. Where your gloves (to be)? - I (to put) them into my pocket. 22. I (to stay) with some American friends in Chicago. I (to stay) with them for two weeks now. I (to have) a great time here. I (to take) the opportunity to improve my English. I already (to see) the towering skyscrapers of Chicago which are reflected in the rippling water of Lake Michigan. I just (to take) a picture of Chicago's Sears Tower which (to rise) 1,707 feet and (to provide) a panoramic view from the skydeck. 23. I (to go) to give that cat some food. I (to be) sure it (to starve). But Jane already (to feed) the cat. You needn't do it.

Okay, let's complete the sentences with the correct forms of the verbs in parentheses:

1. He plays volleyball with his friends.
2. They have been playing since breakfast time.
3. I live in St. Petersburg.
4. I have lived in St. Petersburg since 1990.
5. This is the factory where my father works.
6. He has worked here for fifteen years.
7. Have you found your notebook? No! I am still looking for it. I have already looked for it for two hours, but haven't found it yet.
8. You have been playing with a ball for three hours already. Go home and do your homework.
9. Wake up! You have been sleeping for ten hours already.
10. I have been waiting for a letter from my cousin for a month already, but haven't received it yet.
11. She has already done her homework for two hours; but she hasn't done half of it yet.
12. I have been waiting for you since two o'clock.
13. What are you doing? I am reading. I have been reading for two hours already. I have already read sixty pages.
14. It is difficult for me to speak about this opera as I haven't heard it.
15. I just received a letter from my granny, but I haven't received any letters from my parents yet.
16. The weather is fine today. The sun has been shining ever since we got up.
17. Every day I wind up my watch at 10 o'clock in the evening.
18. Come along, Henry, what are you doing now? I have been waiting for you for a long time.
19. Where are your gloves? - I put them into my pocket.
20. I am staying with some American friends in Chicago. I have been staying with them for two weeks now. I am having a great time here. I am taking the opportunity to improve my English. I have already seen the towering skyscrapers of Chicago which are reflected in the rippling water of Lake Michigan. I just took a picture of Chicago's Sears Tower which rises 1,707 feet and provides a panoramic view from the skydeck.
21. I'm going to give that cat some food. I am sure it is going to starve. But Jane already fed the cat. You needn't do it.