Ответ:

3. Correct the sentences:

  1. Danny went to Bulgaria last year.
  2. Have you seen the Eiffel Tower when you were in Paris?
  3. Did your sister ever ride a horse? (Correct)
  4. I've seen this film twice. (Correct)
  5. My brother went to the US three times.
  6. Did you speak to the teacher yesterday? (Correct)