Answer:
1) to
2)shop
3)am
4)used
5)used
6)used to have
Explanation:
The words would need to follow the structure of the sentence.
Answer:
1) There used to be more restaurants in our town.
2) People used to shop mainly in small local shops.
3) I used to hate cheese, but I am loving it now.
4) People didn't use to use electric bulbs before.
5) The air used to be cleaner twenty years ago.
6) He used to have a beard.