Exercise (1)
1-a
2-a
3-a
4-a
5-an
6-an
7-an
8-an
9-an
10-a
Exercise (2)
1. How long have you
known Gerry?
2. You look dirty. What have you
been doing all the
time?
3. How many times has
Charles visited New York?
4. She has been learning French words for hours, but she still
doesn't remember all of them.
5. The children have been
watching videos for
two hours.
6. Has he been
studying hard
today?
7. My father has never
smoked.
8. Sorry, I'm late. Have you
been waiting for long?
9. We haven't seen Lisa recently.
10.
He has been
writing on his essay
all day, but he hasn't finished yet.
Exercises(3)
1. María works for a TV station.
2. At the moment she is travelling in the Sahara Desert.
3. Dan loves wild animals.
4. He isn´t visiting Alaska at the moment.
5. Marta doesn´t live in Africa.
6. She is staying in Africa
at the moment.
7. Dad usually cooks dinner.
8. My parents go to Italy every
year.
9. My sister walks to school every day.
10. We are having lunch now.
11. I never stay in on Saturday evening.
12. I am going to the cinema now.
13. My mum isn´t working today.
14. Peter doesn´t like rap music.
15. He is listening to pop music at the
moment.
16. Donna usually goes shopping on
Saturdays.
17. Let´s go out. It isn´t raining now.
18. Hurry up! Everybody is waiting for
you!
19. The sun rises in the east.
20. Water boils at 100 degrees.
21. The water is boiling. Can you turn it
off?
22. I must go now. It is getting late.
23. I usually go to work by car.
24. It doesn´t rain very much in the
summer.
25. The moon goes round the earth.
