Ex. 27. Supplythe Present Perfect Tense of the verbs in brackets.
1. Up to now I (visit) twenty countries. 2. He (type) six letters so far. 3. (You ever be) to Paris? 4. They (never quarrel) like this before. 5. I (not write) to Marco since 1980. 6. We (not be) there since we were young. 7. I saw her in May, but I (not see) her since. 8. I (know) them for many years. 9. They (buy) a new car. 10. He (travel) all over the world. 11. (You forget) your promise. 12. I (just fly) from Rome. 13. She (recently become) a director. 14. They (already speak) to me about it. 15. I (meet) her several times.
Ex. 28. Supplythe Present Perfect Continuous of the verbs in brackets.
1. I’m tired. I (dig) all day. 2. How long (you wait) here? 3. I (stand) here since 6 o’clock. 4. How long (you learn) Chinese? 5. She (study) English for five years. 6. You’re out of breath. (You run)...? 7. We (live) here for 20 years. 8. Your eyes are red. You (cry)... ? 9. What you (do) all afternoon? 10. How long the children (sleep)?