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Complete the sentences with the Past Simple or Present Perfect Simple of these verbs.
be, contact, eat, go, not exist, visit, want, watch

1. I ___________ to go on trip to space foe years!
2. Do you think beings from others planets ________Earth?
3. We _______ the TV programme about UFOs last night.
4. _________human beings ______________to Maris yet?
5. The astronauts ____________special food during their trip last week.
6. Jack _____________ to interview the scientists and he'll be back later.
7. __________you ___________them yet?
8. Powerful telescopes __________for long.