НАДО 1.4. Contrast the Present Perfect with the Present Perfect Progressive Tense. 1. She (travel) around Europe for two months and (visit) six coun tries so far. 2. We (be) students of this University for the last two years, 3. He (talk) for hours and soon he will have to stop. 4. The workmen (build) our new building since last May. 5. My brother re- cently (enter) the University. 6. My teacher (correct) notebooks for 3 hours and not (finish) yet. 7. I (understand) everything you (say) for the last twenty minutes. 8. His father (smoke) for 20 years and now (be advised) by his doctor to stop. 9. He not (visit) us since 1990. 10. I (wait) for him since half past eight and now I'll wait only for another five minutes. 11. He (walk) ten miles. 12. We (talk) for three hours. 13. You (walk) too fast. That's why you are tired. 14.1 (darn) socks all the morning. 15. How many pairs you (darn)? 16. He (eat) since he arrived. 17. The boy (eat) seven ice-creams. 18. I (sleep