4. Put the verbs in brackets into the Present Perfect or the Present Perfect Continuous:

1. We (to walk) ten kilometres. We (to walk) for three hours. 2. The driver (to drink). I think someone else ought to drive. 3. I (to sleep) on every bed in this house and I don’t like any of then. 4. I (to sleep) since ten o’clock. 5. The students (to work) well this term. 6. I only (to hear) from him twice since he went away. 7. I (to work) for him for ten years. 8. He (to teach) in this school for five years. 9. I (to teach) hundreds of students but I never (to meet) such a hopeless class as this. 10. You (to hear) the news. Tom and Ann are engaged! That is not new. I (to know) it for ages! 11. It (to rain) for two hours and the ground is too wet to play. 12. Why you (to make) such a horrible noise? I (to lose) my key and I (to try) to wake up my wife by throwing stones at her window. 13. This is the third time you (to be) here. 14. John (to learn) English for seven years, and at last he (to master) the irregular verbs. 15. Samantha (to drive) for years and she has never had an accident.

5. Fill the spaces in the following sentences by using for or since:

1. I have been fishing ____ two hours. 2. J have been working in this office

____ a month. 3. They have been living in France ____1970. 4. I have known that ____ a long time. 5. That man has been standing there ____ six o’clock. 6. Things have changed ____ I was a child. 7. The kettle has been boiling ____

a quarter of an hour. 8. The central heating has been on ____ October. 9. He has been very ill ____ the last month. 10. I have been using this machine ____

twelve years. 11. We have been waiting ____ half an hour. 12. He has been in hospital ____ the accident. 13. He has not been speaking to me ____ the last meeting. 14. They have been on strike ____ November. 15. They have been quarreling ever ____ they got married.

6. Use the Present Continuous or the Present Perfect Continuous instead of the infinitives in brackets:

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. 3. Here you are at last! I (to look) for you everywhere. 4. I see you (to write) letters since the morning. Is it the last letter you (to write) now? 5. You (to sit) here for a long time. You (to wait) for somebody? 6. How long you (to learn) English? – For three years already. 7. I (to work) at my report since Monday. Now I (to write) the conclusion. 8. She (to sleep) for ten hours! You must wake her! 9. It is six o’clock. I (to wait) for Ann for half an hour. I must be off. 10. David (to wash) his hands. He just (to repair) the TV-set.

7. Use the Present Indefinite, the Present Continuous or the Present Perfect, instead of the infinitives in brackets:

1. Will you, please, lend me your pen for a moment? – I (to leave) mine at home and now (to have) nothing to write with. – Ann (not to write), she can give you her pen. 2. You (to read) “Earthlight” by Clark? – I (to read) it now, I (not to finish) it yet. It (to be) a very good book. I (to like) it very much. 3. We (to go) to the cafe tonight. You ever (to be) there? 4. Where (to be) Ann? – She (to be) in the kitchen. – What she (to do) there? – She (to wash up). 5. Don’t forget we (to have) a party tomorrow. 6. (to be) there anything matter with you? You (to be) so pale. – Nothing the matter. I just (to finish) my work and I (to be) a very tired. 7. Who (to play) the piano? – Mary still (to have) a music lesson. 8. Ring me up when you (to be) free. I (to have) to discuss with you. 9. I (not to hear) news yet. 10. Hurry up if you (to want) to go with me.