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 tiles merged into the lawn.

SOLUTION: Plural

PROBLEM: Within seconds, the roar of the television reached her ears ; the rage built up inside of him now released.

SOLUTION: Singular

PROBLEM: As long as you answer them, your mate will remain whole.

SOLUTION:
Singular