TASK DEFINITION: In this task you are given a sentence. You must judge whether subject of the main clause is singular or plural. Label the instances as "Singular" or "Plural" based on your judgment.
PROBLEM: A trickle of something simmered in my gut and the buzz of anxiety spread.

SOLUTION: Singular

PROBLEM: Her prayers about him taking a turn for the worse must have come true.

SOLUTION: Plural

PROBLEM: Soon the forests could not support so many hungry mouths, and Papa sent my brothers out to find their own families.

SOLUTION:
Plural