All substances, _____ solids, liquids, or gases, are made up of entirely atoms.
It ____in this new hall ____ was just set up last month ________ we held an important meeting yesterday.
In order to find _______ better job, he decided to study _________ second foreign language .
She is becoming fat, _______ bothered her very much.
He told us whether _________ a picnic was still under discussion
— I wonder ________ you’ll water this kind of flower. —Once a week.