Ответ:
Ex.1
1. We've swum in the sea but we have not swum in the river.
2. My sister has met Usain Bolt.
3. they have traveled to China three times.
4. A- Have you ever been to chili?
B- No I have not.
5. has he ever climed a mountain?
6. They have not driven abroad.
7. I have seen elephans in the wild.
8. A- Have you ever sleept in a tent?
B- Yes I have.
Ex.2.
1. 've met
2. came
3. did she
4. travelled
5. rode
6. 's salled
7. has she studied
8. learnt
9. has been
10. did she go
11. explored
Объяснение: