Study the examples and choose the correct options in rules 1-4.

A. TV didn’t use to have colour pictures. 

B. Life used to be more difficult. 

C. Did people use to have more skills? 

RULES

1. We use used to + infinitive when we talk about a habit or state in the past which is different / the same now.

2. After used to we use the base / continuous form of the verb.

3. The negative form is didn’t use to / used to.

4. The question form is Did + subject + use to / used to + verb.