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

[EX Q]: Humans host _ species of louse, the head louse , the body louse and the pubic louse .
[EX A]: three

[EX Q]: Female dropouts are also _ times more likely to smoke during pregnancies.
[EX A]: eight

[EX Q]: Mites can survive off the body for up to _ days.
[EX A]:
five