1. When I was a child I used to ask a lot of questions.
2. Sue lives alone. It is not strange for her. She is used to living alone.
3. Their neighbours are very noisy, so they have to get used to the noise.
4. She's been in Britain for three months and she can't get used to driving on the left.
5. Mike is used to doing his homework to music. It's a usual way he does it.