Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
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Question: Rabbits can live to be around ____ years old or older.

Answer: ten

Question: Many infected dogs exhibit ____ symptoms until the disease is in an advanced state.

Answer: no

Question: Fuels are of ____ classes, solids, liquids, and gases.

Answer:
three