It is well-known that proper amounts of exercises, if _______ regularly, will benefit our health.
The girl looked at me with a _____expression. Maybe the problem was quite ____.
A quarrel _________, which made him ______ his family.
Our class _______ of thirty-two boys and twenty-three girls.
—What about seeing the new movie at the theatre tonight? —
Officials believe that more than one person _____ for the big fire.