1. how often ) to the disco? 2. book) the tickets yet.3. where george ) his holiday? 4. my ) his old ford for seven years already.5. rachel ) the dinner.6. my little ) fairy tales.7. a water ) of hydrogen and oxygen.8. how long ) chess? 9.) ken three times lately.10. the ) for half an hour already.11. this professor ) interesting lectures.12. what ) now? 13. david ) up enough money to buy a laptop.14. mr. ) golf at weekends.15. though ) comedies, sometimes she16. the ) up their room since the very morning.17. believe) him, he ) the truth.18. who ) for here? 19. ) about the museum for three hours already.20. the kettle ).​

1. How often do you go to the disco?

2.  Clair hasn't booked the tickets yet.

3. Where does George usually spend his holiday?

4. My cousin has been driving his old Ford for seven years already.

5.Rachel is still cooking the dinner

6. My little daughter likes fairy tales.

7.A water molecule consists of hydrogen and oxygen.

8. have you been playing chess

9. i've met Ken three times lately

10. the band was playing for half an hour already

11. This professor always gives interesting lectures

12. What are they discussing now?

13. David has saved already up enough money to buy a laptop.

14. Mr. Pike plays golf at weekends.

15. Though Martha prefers comedies

16. The girls have tidy up their room since the very morning.

17. I don't believe him, he never tells the truth.

18. Who are you waiting for here?

19. We have been roaming about the museum for three hours already.

20. The kettle has just boiled