Using Tag Questions

When I was seven years old in my hometown my family moved to a new house. That day my neighbors came to our new house. We celebrated at my new house. My mother, aunt and brother-in-law cooked something for dinner.

Before, my old house didn't have a floor. The new house had two floors. I was surprised. I walked upstairs and downstairs many times. I was very happy.

My mother said, " Go carefully! You haven't walked up and down stairs many times, have you?"

"Yes, I have," I said.