Used to

We use used to do to talk about the past. It is not a tense but it is like a tense. It is a special expression. We use the expression used to do for the past only. Look at the example below:
- He used to work in a shop. (it means that in the past time he worked in a shop, but now he work somewhere else)
- They used to be married. (it means that they were married, but now they are divorced)
Now, try this exercise like the example below.
Example: He used to live alone, but he no longer live alone.
1. I ....... my own dishes, but now my assistant wash them all.
2. Tina ....... on foot to school, now she goes by bike.
3. I ....... breakfast, but now I don't have breakfast.
4. Tom ....... alone to school, but now he goes to school together with Tina.
5. My mother didn't ...... breakfast for us before going to work, but now she cooks.
6. I ...... by typewriter to finish my job, but now I type by laptop to make it faster.
7. I didn't ........ coffee,but now I drink coffee.
8. They didn't ....... each other, now they call each other.
9. She ....... swimming very often, now she goes rafting.
10. I didn't ........ fit when it was rain, but now I am very fit.