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: Prokaryotes mean they have ____ nucleus in which they store genetic material.

SOLUTION: no

PROBLEM: Onions are of ____ general types.

SOLUTION: two

PROBLEM: Moles breed in late winter or spring and have a gestation period of ____ to six weeks.

SOLUTION:
four