Ответ:

  1. A: Have you ever seen a snake? B: Yes, I have. We saw one in our garden.
  2. A: Has your brother ever had an accident in his car? B: No, he hasn’t. He’s a very careful driver.
  3. A: Have your parents ever visited the USA? B: Yes, they have. They went there six years ago.
  4. A: Have you ever tried to invent something? B: Yes, I have. But it wasn’t successful!
  5. A: Has Fiona ever ridden a horse? B: Yes, she has. Unfortunately, she fell off!