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: Her feet slide in the fall leaves as she hits at him with her one free hand.

SOLUTION: Singular

PROBLEM: Tap, tap, tap and the red slash once again consumed the screen.

SOLUTION: Singular

PROBLEM: The hard jaws belied the warmth he was trying to exude.

SOLUTION:
Plural