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: The monitor's beeping dove from a constant beep to deep electronic thuds.

SOLUTION: Singular

PROBLEM: The harsh mesh dulled it quickly.

SOLUTION: Singular

PROBLEM: This exercise is most successful when other children are involved and they all are required to do the " long sit. "

SOLUTION:
Singular