instruction:
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.
question:
My teacher shifted uncomfortably.
answer:
Singular

question:
There was no quad, never had been a Henning's Cafe, and certainly no door on the left.
answer:
Singular

question:
The footsteps became louder and louder and he knew it was only a moment away from the guards catching him in the doorway.
answer:
Plural