TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Monarch caterpillars have _ pairs of tentacles.

SOLUTION: two

PROBLEM: Echocardiography demonstrates in clear, graphic fashion the _ cardiac chambers and four valves.

SOLUTION: four

PROBLEM: Chile is a country with extreme poverty, and many of the poor previously had _ access to water.

SOLUTION:
no