TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Flexible shapes are also shapes which have _ obvious way of being attacked.

SOLUTION: no

PROBLEM: Blood pressure is really _ measurements, systolic and diastolic.

SOLUTION: two

PROBLEM: Plants synthesize _ types of polysaccharides, starch and cellulose.

SOLUTION:
two