To get rid of a sore throat you can use a humidifier that will put moisture into the air. You can also hover over it to get moisture into your lungs as well.
Just be careful to not get burnt by the hot moisture. If you don't have a humidifier you can also boil a pot of water on the stove and do the same thing.
Drink some hot tea with honey in it also. Honey in hot tea has helped me get rid of my sore throat too.