22e Treat most indefinite pronouns as singular.

Indefinite pronouns are pronouns that do not refer to specific persons or things. The following commonly used indefinite pronouns are singular.

anybody	each	everyone	nobody	somebody
anyone	either	everything	no one	someone
anything	everybody	neither	nothing	something

Many of these words appear to have plural meanings, and they are often treated as plural in casual speech. In formal written English, however, they are nearly always treated as singular.

The examples read,

Each of the essays (strikethrough) have (end strikethrough) (insert) has (end insert) been graded.

Nobody who participated in the clinical trials (strikethrough) were (end strikethrough) (insert) was (end insert) given a placebo.

Text below reads, The subjects of these sentences are Each and Nobody. These indefinite pronouns are third-person singular, so the verbs must be has and was.

A few indefinite pronouns (all, any, none, some) may be singular or plural depending on the noun or pronoun they refer to: Some of our luggage was lost. Some of the rocks were slippery. None of his advice makes sense. None of the eggs were broken.