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: Stems are of ____ types, flowering and vegetative.

SOLUTION: two

PROBLEM: Variable stars fall into ____ major physical classifications.

SOLUTION: four

PROBLEM: Vomiting is present in up to ____ thirds of patients.

SOLUTION:
two