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: Still, guilt followed as thoughts of Eirik crossed my mind.

SOLUTION: Singular

PROBLEM: The determination in his voice made me stare at him.

SOLUTION: Singular

PROBLEM: The floors were bumpy, curvy, and shook from side to side.

SOLUTION:
Plural