Словообразование

My brother always leaves … (VALUE) items lying around.

Make sure that nobody can read your mail without your … (KNOW).

Be very … (CARE) with official papers and documents.

It can be done in a … (VARY) of ways.

There's a lot of … (COMPETE) between applicants.

… (CRIME) can steal your personal details.

We were … (LUCK) to get some money.

These papers contain important … (inform).

The professor spoke on the subject at great … (LONG).

You look … (WORRY). What's happened?