III. Complete the questions in Present Perfect

1. Have you (roller-skate) yet? Have you (roller-skate) yet? 2. Why has Jack (watch) the film yet? Why has Jack watched the film yet? 3. Where have your friends (buy) the gifts ? Where have your friends bought the gifts? 4. Has Jane (swim) in the river yet? Has Jane swum in the river yet? 5. Have you (do) the shopping yet? Have you done the shopping yet? 6. Have the children (walk) in the park yet? Have the children walked in the park yet? 7. How has your father (help) you to make the plane model? How has your father helped you to make the plane model? 8. Has he (play) rock music in the concert? Has he played rock music in the concert? 9. Has the cat (sleep) all day? Has the cat slept all day? 10. Have you ever (see) a penguin? Have you ever seen a penguin?