instruction:
In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.
question:
Third , the proffeser agrees that the the gas prices in the United States are cheep , and they should rais them to safe the enviroment and people 's healths .
answer:
Third , the professor agrees that the gas prices in the United States are cheap , and they should raise them to save the environment and people 's health .

question:
In a market economy the price must reflect costs of the product and consumer 's willingness to buy the product .
answer:
In a market economy , the price must reflect costs of the product and consumers ' willingness to buy the product .

question:
My wife and I always go to Tokyo around December .
answer:
My wife and I always go to Tokyo around December .