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: Colostrum is bright yellowish thick milk secreted in the first ____ to six days after birth.

Answer: three


Question: Green energy comes in ____ basic forms.

Answer: two


Question: Sharks have ____ gill slits on each side of the head.

Answer:
five