George doesn't mix much; he likes to keep to himself. - George does not mix much; he likes to keep to himself.
George doesn't mix much; he likes to keep to himself.
George does not mix much; he likes to keep to himself.
What you are saying doesn't make sense. - What you are saying does not make sense.
What you are saying doesn't make sense.
What you are saying does not make sense.
... Iran does not build a nuclear weapon but if Iran's leaders ...
... it does not involve any new bureaucratic program to join across the country ...