1. I (not see) my friend Mike last summer. Actually, I (not see) him since we left school. 2. –You (see) Liza in the

1. I did not see my friend Mike last summer. Actually, I have not seen him since we left school. 2. – Did you see Liza in the last few days? – No, but I will see her today. We are going out for dinner. 3. – Have you ever been to South America? – Yes, I\'ve been there several times. – When did you last go there? – A couple of months ago. I sometimes go there on business. 4. Elmer took hundreds of pictures when he was in Europe. 5. Helen was here earlier but I think now she has already left. She usually leaves the office at 5 o\'clock. 6. Patrick left the party early because he was sick. 7. – Have you ever ridden a camel? – Yes, I rode a camel when I was in Egypt last year. 8. Erick has had a lot of free time since he moved to Thailand. 9. Bob visited the White House when he was in Washington. 10. I have been to the supermarket. Look, I\'ve bought a lot of things.