Якщо можна з перекладом дам 50
1. Have you ever been to the United States? Yes, I have.
2. Have they ever found a snake in their tent? Yes, they have.
3. Have you ever made a bad mistake? No, I haven't.
4. Has she ever eaten Mexican food? Yes, she has.
5. Has he ever slept in a tent? No, he hasn't.
6. Have they ever taken photos with a mobile phone? Yes, they have.