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.

Q: Animals exhibit ____ patterns for bringing sperm and eggs together.

A: two
****
Q: Penile cancer occurs almost exclusively in the uncircumcised male at a rate of ____ per million.

A: eight
****
Q: Electrical transformers come in ____ categories, wet and dry.

A:
two
****