Ответ на вопрос: 1. Use the Present Perfect Tense. 1. John (visit) Belarus only once. 2. They (not/see) a lot of species of wild animals yet. 3. They (already/be) to the national park. 4. Nick (already/read) this book. You can take it. 5. I (take) a photo of a wild deer. 6. The pupils of our class (be) on a hike. 7. We (not climb) a mountain yet. 8. I (be) to Polotsk several times. 9. My friends (just/come) from the interesting expedition. 10. He (never/meet) wild animals before.