Put the verbs in brackets into the Present Perfect or the Past Simple. Pay attention to the underlined words.
1. I ( already do) my homework.
2. I ( do) my homework yesterday.
3. I (live) in London in 2015.
4. We (live) in Moscow since 2010.
5. He ( be) in the USA last summer.
6. They ( be) in Italy for a week.
7. You ( play) the piano today?
8. She ( play) the piano yesterday?
9. You ( ever see) the eruption of a volcano?
10. We ( see) the eruption of a volcano two years ago.
11. I ( not yet cook ) dinner.
12. She ( not cook) dinner yesterday.

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