Finish each of the following sentences so that it's meaning stays the same.
1. I started learning English when I was 9 years old. (since)
=> _____________________________________________
2. We have lived in Ha Noi for 10 years. (ten years ago) 
=> _____________________________________________
3. They watch TV two or three hours every day. (how many)
=> ______________________________________________
4. The Old Town of Inca is in Peru. (where)
=> _______________________________________________