Research shows that though students benefit from having parents involved at school, _____ happens at home matters much more.
The reason Beethoven went away to the country is ______.
It is hard to imagine a large city without policemen, but such was the ______ in London in the early 18th century.
Prices reach equilibrium at the level at which quantity demanded ______ quantity supplied.
She possessed a quick mind, a sharp tongue and ______ a strong will.
The composers soon began to write musical dramas about Bible stories ______ in church.