200
He wanted to _______ slavery.
The brontosaurus was common in North America.
Pierce the lid before _______.
Thread can be made of ______ or nylon.
Liverpool is a city of _______.
He made an _________ appeal for information.
The slaves were ______ to work long hours for little food.
Slavery is _____ trafficking.
They had to ______ in the fields.
I will always remember my _______ school teachers.
In 1865 _______ was abolished in the USA.
The ______ of this river is in those hills.