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 thrusts slowed down to an unbearably slow pace.
Plural

" No apologies are adequate for my leaving you in danger... nor can I ever thank you enough for saving my life. "
Plural

" What were those butterflies ? "

Plural