When the noun is plural and it denotes some specific quantity or amount, the verb should be also plural.

Subject-verb agreement is when the subject and verb of a sentence match in tense, aspect, and mood. This translates to number, person, and gender.  Here are some rules of subject-verb agreement: A singular subject takes a singular verb. For example, "Tom rides his bike to work every day". A plural subject takes a plural verb. For example, "The boys are climbing the walls like caged animals". When using the singular "they," use plural verb forms. For example, "The participant expressed satisfaction with their job. They are currently in a managerial role at the organization". The pronoun... Show more

Subject-verb agreement is when the subject and verb of a sentence match in tense, aspect, and mood. This translates to number, person, and gender. 

Here are some rules of subject-verb agreement:
A singular subject takes a singular verb. For example, "Tom rides his bike to work every day".
A plural subject takes a plural verb. For example, "The boys are climbing the walls like caged animals".
When using the singular "they," use plural verb forms. For example, "The participant expressed satisfaction with their job. They are currently in a managerial role at the organization".
The pronoun "you" always takes a plural verb.
If a sentence begins with "here" or "there", the verb agrees with the subject that follows it. 

Note: A common mistake is to assume that present tense verbs ending in “s” (ex: drinks, runs, dances) are plural. 

Related Test: English Grammar Practice Test: Verb Conjugation

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