They used to live next door to us.

Father used to tell us not to envy others.

Dentists used to use amalgam fillings for cavities.

She is getting used to this rural life by degrees .

People used to think that only humans could use language.

The Faraday constant is used to measure the amount of electricity used in electrolysis.

Radiolocation is a technique used to detect and locate objects using radio waves.

He is used to traveling.

He used to drink.

He used to be a gentleman.