Here are the answers with the correct tense: 1. Oh no! I have lost (lost) my wallet! 2. Have you seen (see) Julie today? 3. The Vandals invaded (invaded) Rome in the year 455. 4. She has lived (lived) in seven different countries, so she knows a lot about different cultures. 5. Have you seen (seen) ‘The King’s Speech’? 6. John has never understood (understood) the present perfect. 7. She broke (broke) her leg the day before her exam. 8. We saw (saw) Oliver yesterday. 9. They have lived (lived)