Refer to the “Indefinite Pronouns Chart” below and read the indefinite pronouns in the column marked Singular. Indefinite pronouns that end in -one or -body are always singular. If you think of one, anyone, someone, no one, nobody, anybody, and somebody, that rule makes good sense. Yet, what about everybody and everyone? Every- sounds plural; everybody and everyone sound like a crowd. You've been studying the English language long enough, though, to know everything doesn't always make sense. Consider these parallels. Some nouns that end in “s”—like news, aerobics, measles, and mathematics—are singular. Then there are other words like data and media that sound singular but are actually plural.

Indefinite Pronouns Chart
SingularPluralSingular or Plural
anotherbothall
anyonefewany
eachmanymore
everyoneothersmost
everybodyseveralnone
everything some
much  
nobody  
nothing  
other  
someone  
anybody  
anything  
either  
one  
neither  
no one  
somebody  
something  
Source: http://www.infoplease.com/cig/grammar-style/indefinite-pronouns.html#ixzz1yN1F9tKB

In each of the five sentences below, select the verb that matches the singular indefinite pronoun in number.