Complete the explanation with be used to, get used to or used to. 1) we use to talk about past habits. 2) we use to talk about the process of becoming familiar with an action. 3) w use to talk about actions which we are already familiar with.

1) We use used to to talk about past habits.
2) We use get used to__ to talk about the process of becoming familiar with an action.
3) We use be used to to talk about actions which we are already familiar with.