instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Flexible shapes are also shapes which have _ obvious way of being attacked.
answer:
no

question:
New species are believed to arrive in the Mediterranean at the rate of _ to five annually.
answer:
four

question:
Malnutrition affects three times more children under _ in the countryside than in the towns.
answer:
four