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: Norplant implants are ____ matchstick size rods that are inserted into the upper arm.

A: six
****
Q: Sexual reproduction involves the union of cells from ____ parents.

A: two
****
Q: Tigers vary in length from ____ to five meters.

A:
three
****