Used to, Be used to, Get used to.

'Used to' is different from 'be used to' and 'get used to'. Let's see:

• We use "used to" + the base form of the verb:

- For something that happened regularly in the past but no longer happens:

Affirmative: I used to go to the park with my friends every day.
Negative: I didn't use to go to the park with my friends every day.
Interrogative: Did you use to go to the park with your friends every day?

- For something that was true but no longer is:

There used to be a theatre in this town but now there isn't.

• We use " be used to" + the present participle of a verb (-ing form):
  

- To say that something is normal, not unusual:

I am used to living on my own. I've done it for quite a long time.

• We use " get used to" + the present participle of a verb (-ing form):
  

- To talk about the process of something becoming normal for us.

I have always lived in the country but now I'm beginning to get used to living in the city.

Activities:
- Exercise 1
- Exercise 2
- Exercise 3
- Exercise 4
- Exercise 5

Source: English Grammar Secrets.