Certain nouns that end in –s, such as news, require the singular verbs. Some others such as eyeglasses, pants, binoculars, scissors require plural verbs.
Many a, every, and each
When these precedes a subject, the subject is always singular.
An indefinite pronoun is a pronoun that does not refer to any person, amount, or thing in particular, e.g. anything, something, anyone, everyone.
Indefinite pronouns must agree with its antecedent in number. Thus, when a singular personal pronoun is used, the antecedent is a singular indefinite pronoun. When a plural personal pronoun is used, the antecedent is a plural indefinite pronoun.
Example: Each of the women puts her umbrella in the basket.
Example: Many of the dentists have their own practice.
another, either, neither, other, anybody, everybody, no one, somebody, anyone, everyone, nobody, someone, anything, everything, nothing, something, each, much, one.
both, few, many, others, several.
Singular or plural
all, any, enough, most, none, some