In order to avoid boredom, the most important thing is to keep oneself _______________.
The word "allocated" in the passage mostly means "______".
Only one of our gifted students______to participate in the final competition.
Education in many countries is compulsory________the age of 16.
The pool should not be made so deep______small children can be safe there.
It is stated in the passage that____________________ .
She asked me______I was looking at.
He_______________us but he was short of money at the time.
Michael looked deeply hurt and surprised when_____________________ .
_______ has been a topic of continual geological research.
______ one of the most beautiful forms of performance art, ballet is a combination of dance and mime performed to music.