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: Cockroaches have six legs, ____ antennae and some have wings.

Answer: two


Question: Seasonal records indicate that, in most years, ____ generations occur.

Answer: two


Question: Essential oils have a non-toxic, residual effect of up to ____ months from just one application.

Answer:
five