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

[EX Q]: Blood pressure is really _ measurements, systolic and diastolic.
[EX A]: two

[EX Q]: Mosquitoes live four to _ weeks.
[EX A]: eight

[EX Q]: Norplant implants are _ matchstick size rods that are inserted into the upper arm.
[EX A]:
six