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: Hands wrapped around his waist and helped him to his feet.

SOLUTION: Plural

PROBLEM: The thud of his head connecting with the glass caused a satisfying crunching sound.

SOLUTION: Singular

PROBLEM: The recent emptiness in her chest now filled with something warm and tender.

SOLUTION:
Plural