Work means much to me. It is ______ of my life ______ air, water and sunlight.

We decided to _______ signs around the school.

Do you know if _____ back next week? If he _____ back, please let me know.

You can’t get in. The exam _________ for over 30 minutes.

Do you know if he ___to our party? —I think he will if he ___free tomorrow.