Final answer:
The appropriate word to finish the sentence is 'nada' which means 'nothing'.
Step-by-step explanation:
The appropriate word to finish the sentence is nada. The phrase 'No hay' means 'There is no' and 'nada' means 'nothing'. So the correct completion of the sentence is 'No hay nada en la nevera' which translates to 'There is nothing in the fridge'.
Learn more about completion of sentences in Spanish