The air that surrounds our planet is both odourless , colourless, and invisible .
We must push the piano to the corner of the hall to_____________________ our party tonight.
______ his brother, Mike is active and friendly.
Education in many countries is compulsory________the age of 16.
The pool should not be made so deep______small children can be safe there.
_______ has been a topic of continual geological research.
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
__________ John Kennedy was elected president, he was the youngest American President ever.
The packages___________________ so that it would be easier to carry them.
She asked me______I was looking at.
He_______________us but he was short of money at the time.