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.

Q: The cockpit rocked again, throwing him against his harness.

A: Singular
****
Q: The squad of Canadian rangers continues to hack its way through the thick brush.

A: Singular
****
Q: The upper floors of the main building, above the great hall, housed the classrooms and the library.

A:
Plural
****