1. B: Yes, I saw some in a zoo last summer.
A: Have you touched them?
B: No, they were in their cages.
2. A: Have you gone shopping on Saturday?
B: Yes, I bought lots of things.
A: What did you buy?
3. A: Have you finished your project yet?
B: Yes, I finished it last night.
A: Have you typed it yet?
B: Yes, I already typed it.
4. A: Have you ever been to Poland?
B: Yes, I went there in 1992.
A: Where did you stay?
B: I've stayed at a friend's house in Warsaw.