TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Mature cysts have _ nuclei while the immature have two.

SOLUTION: four

PROBLEM: Most chicks are killed by predators in the first _ months of their life.

SOLUTION: six

PROBLEM: Seismologists offer _ major theories for the occurrence of large, deep earthquakes.

SOLUTION:
three