1.I have never seen a crocodile, but Alice has seen one.
2. I have never been to Spain, but Alice has been there three times.
3. I have never eaten sushi, but Alice has eaten.
4. I have never flown by plane, bu Alice has flown.
5. I have never spoken to an American, but Alice has spoken to one.
6. I have never sung in public, but Alice has sung many times.
7. I have never driven a car, but Alice has driven one.
8. I have never met a famous person, but Alice has met many famous people.
9. I have never swum in the sea, but Alice has swum in the sea.
10. I have never seen a queen, but Alice has seen one.
