Question

When we were at school we ____ wear a uniform

Answer 1

When we were at school we should wear a uniform

Answer 2

Answer:

When we were at school we used to wear a uniform.

Explanation :

• Used to is a modal auxiliary verb. It is correct for the mentioned blank space.

• We use 'used to' to talk about past habits and states which are now over. 'Used to' has no present form.

Uses of Used to :

• 1. Past habits and states : The old man used to do hardwork when he was young.

• 2. Question with 'used to' : Used you to drink milk with breakfast? What did you use (d) to do in your leisure?

• 3. Used to in negative form : We used not to like milk at breakfast.

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