In the past I did it regularly but not anymore now.
http://youtu.be/ulezklvGaQk
I used to stay up late until 2 or 3 a.m. However, I started a new job two months ago, and I have to get to work at 7 a.m. At first, I had a difficult time getting up early, but now I’m used to getting up early.
1. I used to live alone. (以前獨居)
Did you use to live alone? (疑問句)
I did not use to live alone. (否定句)
2. I’m used to living alone.(現在習於獨居)