Вставьте вместо скобок Present Continuous -или Present Perfect Continuous.

Note. The Present Continuous expresses an action going on at the moment of speaking. The Present Perfect Continuous expresses an action occupying a period of time still continuing or just finished.

1. What you (to look) at? — I (to look) at that picture over there. I (to look) at it for almost half an hour and I still can't understand what it is. 2. What Mary (to do)? — She (to practice) the piano. She (to play) since 12 o'clock. I think she must have a rest. 3. Here you are at last! I (to look) for you everywhere. 4. Why you (to smile) Robert? — I (to watch) your kitten. What a playful little thing it is! 5. I see you (to write) letters all the morning. Is it the last letter you (to write) now? 6. You (to sit) here for a long time. You (to wait) for anybody? 7. How long you (to study) English? — For three years already. 8. Г (to work) at my report since Monday. Now I (to write) the conclusion.9.Mary's mother (to rest) in the garden all day because she is ill. lO.She (to sleep) for ten hours! You must wake her! 11. David (to repair) the TV-set. He (to work) at it for an hour or so. David (to wash) his hands. He just (to repair) the TV-set. Why you all (to laugh)? Jim (to tell) you his anecdotes? Ifs six o'clock. I (to wait) for Ann for half an hour. I must be off now.

2. Вставьте вместо скобок Present Perfect или Present Perfect Continuous:

1. You (to pass) your exam in English literature? 2.1 (to try) to learn English for years but I (not to make) good progress yet. 3. That book (to lie) on the table for weeks. You (not to read) it yet? 4. I (to wait) here for her since 7 o'clock and she (not to come) yet. 5. I (to read) " War and Peace" for the last three months. 6. I (to think) about you all day. 7. He never (to be) here before. 8. I can't help being angry with you; you (to sit) here all the time and doing nothing. 9. There's nothing to be proud of; you (not to get) a single excellent mark as, yet. 10.1 (to work) so hard this week that I (not to have) time to go to the cinema. 11. The girls (to talk) about their new dresses for half an hour already; it seems they have nothing else to talk about. 12.1 just (to talk) to him; he agrees to help us. 13. Some of our students (to join) the English club to get a better command of the language. 14. I (to know) her all my life and we always (to be) good friends.

3. Выпишите конструкции с Present Perfect Continuous:

1. Surely you must have known that Mark took it. You can`t have been thinking all this time that I did it.

2. And I have not been thinking about it. I`ve been torturing myself with it.

3. No, I wasn`t thinking of Smith`s cottage. I must have been thinking of another one perhaps your own.

4. He has been coming here day after day for years.

5. I suppose you have been telling lies again.

6. I`ve been drinking too much.

7. The telephone has been ringing for five minutes, why don`t you answer.

8. He has been staying with them for a fortnight.