In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: Most women have _ problems getting pregnant with a retroverted uterus.
[EX A]: no

[EX Q]: Flytraps spin when _ creatures can be infected.
[EX A]: no

[EX Q]: Females are able to conceive _ to four months after calves are weaned.
[EX A]:
three