1) Have you ever been there?
2) When were you there?
3) Have you seen the film yet?
4) How long have you been there?
5) Has he ever been interested in collecting stamps?
6) When was he interested in collecting stamps.
7) How long has he known the doctor?
8)/Have you evere seen a kangaroo?
9) Where did you see a kangaroo?
10) Have you visited the musem yet?