1. He has already bought a ticket to London.
2. He has never bought train tickets.
3. He bought the ticket the other day.
4. He bought the ticket 2 hours ago.
5. He usually buys tickets himself.
6. He is buying a ticket at the moment.
7. He has just bought the ticket.
8. He has bought 11 tickets this month.
9. He bought 11 tickets last month.
10. He has bought 11 tickets lately.