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

Q: Allergic rhinitis is the most common allergic disease, with one in _ Canadian adults affected.

A: five
****
Q: Quinces begin to bear a year or _ after planting.

A: two
****
Q: Gymnosperms produce _ kinds of spores.

A:
two
****