correct cure in a sentence

1. The correct cure is for governments to run even tighter fiscal policies to dampen domestic demand, and to unshackle their currencies.
2. Through the trans-dimensional window, Walter discovered that Walternate had formulated the correct cure for his son, but did not notice as he was distracted by The Observer known as September.
3. However, the Supernaturalists come home one night, Mona suffering seizures after getting hit by a poisoned dart, and Cosmo saves her; he had tested those poisoned darts at the orphanage, and knows the correct cure.
4. It's difficult to find correct cure in a sentence.