2. I have never seen an elephant.
3. Have you ever acted in a play.
4. Helen has ever been to China.
5. Billy and Jack have never visited an aquarium.
6. I have never argued with my parents.
7. My friends have never eaten Chinese food.
8. They have ever swum in the sea.
9. Have you ever seen a film in English.
10. We have never eaten lemon ice-cream.