For a friendship to be ....., one must be honest and caring.

The evidences brought by the detective .... the suspect's innocence.

The football players .... themselves for weeks to be ready for important matches .

High demanding professions, like doctors, may require you to .... time with your family.

Two quarters of a pizza are .... to a half.

The ... were ready to start the race.

The creation of vaccines was the .... of years and years of study.

Few animals survive the .... weather of the poles.

The explorer gazed at the Arctic .... lying before his eyes.