They used to live next door to us.

Dentists used to use amalgam fillings for cavities.

She is getting used to this rural life by degrees .

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

In the old days, people used to barter goods instead of using money.

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

She used to be diligent.

There used to be no freedom of the press.

He used to be a gentleman.

He is used to the work.