200
Aerosol cans cause harm to the _____ layer.
 
A _________ is a way to stop people from entering.
 
The two teams plan to _____ for the charity game.
 
The comedian tried to _______ the foreign accent.
 
George is small and quick-witted. He is _______ to Lennie, although he sometimes gets impatient with him.
 
I don't want to go but I _______ I must.
 
The first communication _________ was launched many years ago.
 
Concentration will help you _______ accurate answers.
 
A ______ is a small group of words.