Упражнение 3. Раскройте скобки, употребляя глаголы в Past Simple или Present Perfect.

1. I have read this magazine and I don’t want to read it again. 2. Scientists still have not found a cure for cancer. 3. The first modern Olympics took place in Athens more than a hundred years ago. 4. Steven has never eaten sushi. 5. I worked as a shop assistant two years ago.