1. John has not seen this video.
2. Have you solved the problem?
3. They have left the classroom.
4. Have your sisters ever ridden a bike?
5. She has never had a party.
6. Mike has broken his eyeglasses.
7. Has it snowed recently?
8. These women have lost their passports.
9. I have been a teacher since 1999.
10. We have not met our parents for years.
