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: Seraphs have ____ wings, and their voices can shake doorposts and thresholds.

Answer: six


Question: Green energy comes in ____ basic forms.

Answer: two


Question: Body has more than ____ cell layers, tissues and organs.

Answer:
two