TASK DEFINITION: In this task you are given a sentence. You must judge whether the object of the main clause is singular(like: apple) or plural(like: apartments). Label the instances as "Singular" or "Plural" based on your judgment.
PROBLEM: I'd retain my existing clients, take over for some of Jillian's, and be responsible for bringing in new clients.

SOLUTION: Plural

PROBLEM: We took great joy in riding them ! "

SOLUTION: Singular

PROBLEM: Practically purring with contentment, she rubbed her slightly bulging belly.

SOLUTION:
Singular