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EXERCISE 4: Use the correct tenses: Simple past, Present perfect or Present perfect continuous tense.

1. I know (know) Mary for a very long time.
2. He is only 22, but he __ (already visit) more than 30 countries.
3. How long __ Olga __ (be) a teacher?
4. So far this year, we __ (save) over $6000.
5. My mother __(have) a cat for about three years.
6. How many countries __ they (visit) in the last two years?
7. I’m really tired. I ____ well recently. (not sleep)
8. Let’s celebrate – Carlos ____ his exams at last! (pass)
9. I ____ my bedroom all afternoon, but it’s still in a mess! (pick up)
10. I ____to Mexico four times. (go)
    EXERCISE 5: Circle the correct alternatives.
11. Since last May, I have moved / have been moving house twice.
12. It smells wonderful in the kitchen . Have you baked / Have you been baking a cake?
13. I have eight missed calls on my cell phone! Ines has called/ has been calling me all morning.
14. I haven’t smelled / haven’t been smelling that perfume since I was a child.
15. Have you heard / Have you been hearing the news about Maria? She’s moving to the USA!
16. Have you switched / been switching off the TV ?
17. We love this film! We’ve seen / been seeing it five times.
18. This is my American friend. She’s stayed / been staying at my house but she goes back to the U.S.A tomorrow.
19. Your eyes are wet. Why have you cried/ been crying?
20. That’s it! I’ve finished/ been finishing my assignment.