Răspuns:
21. He bought a new computer last week.
22. I've lived here since 1987.
23. She usually visits her grandparents on Sundays.
24. Look! The sun is rising.
25. Dad hasn't come home from work yet.
26. Don't go into the kitchen. I just cleaned the floor.
27. I have seen Maria Callas.
28. Kate hasn't called us yet.
29. Sam started learning Spanish two years ago.
30. This jacket costs a lot of money. I can't afford it.