TASK DEFINITION: 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.
PROBLEM: Phylogenetic analyses confirm ____ mitochondrial mallard clades.

SOLUTION: two

PROBLEM: Hyacinths have a wingspan reaching nearly ____ feet.

SOLUTION: four

PROBLEM: Hard ticks have ____ distinct life stages.

SOLUTION:
three