Have you seen our new teacher? When did you see him?

1 Yes, I have.2 I have seen him 15 minutes ago.3 I have been to London last month.4 I have bought this jacket in the shop.5 I have had my dinner at 5 o'clock.6 No, I have not, I have lived in Moscow for 3 years.7 I have come to the University so early, because I have studied very well at school.8 I have read the text 4 times9 I have already done a few exercise. Пожалусйта