6. Choose the right answer:
1. "Does your mother know you're in the park?" "Yes, I told/'ve told her."
2. "What is Jane's phone number?" "Sorry, I forgot/have forgotten."
3. I bought have bought a new skirt. Do you like it?
4. My father studied/has studied Astronomy when he was in school.
5.I made/have made lemonade. Would you like some?
6. Who built/has built the Pyramids?
7. John left/has left home 20 minutes ago.​