A: Have you ever been to England?
B: No, I haven't been to England yet.
A: Have you visited the capital city of your country?
B: Yes, I have visited the capital city of my country.
A: Has your brother (or sister) left school?
B: My brother has just left school.
A: Have you climbed the highest mountain in your country?
B: No, I haven't climbed the highest mountain in my country yet.
A: Have you sent a text to a friend today?
B: Yes, I have already sent a text to a friend today.
A: Have you answered a question in class today?
B: No, I haven't answered a question in class yet.