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In maths, substitution is often used to replace an __________ with a number.
 
Everything in the contract was open for __________.
 
He had a __________ to make to the police.
 
We will apply for __________ to extend our house.
 
Dress nicely or you may be refused _________.
 
Telecommunication is the ____________ of information by electronic and electrical means.
 
That ring is my most treasured __________.
 
Teacher was her __________.
 
The __________ in the 1930s led to much unemployment.
 
Can you do an __________ of a cat?