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.

His footsteps echoed like a death knell when he walked away.
Plural

" We' l talk more about this later. "
Singular

There is a mass of forms in front of her, several dozen of her size, if not larger.

Singular