Have you ever (fly) a plane?
flown
Have you ever (touch) an elephant?
touched
Have you ever (see) a ghost?
see (Do you believe in ghosts?)
Have you ever (eat) unusual food? What was it?
eaten
Have you ever (fail) important exams/tests?
failed
What is the best holiday you have (have)?
had
Have you ever (lose) something important?
lost
Have you ever (fall) asleep at the lesson?
fallen
