How can they say when either each / neither comes are in singular form?

For eg Either Anirudh or his friends [are] responsible for the class.

Question

How can they say when either each / neither comes are in
singular form?
For eg Either Anirudh or his friends [are] responsible for the
class

Nishtha Kapil · Accepted Answer

As a rule, either, each, neither take a singular verb after them
However when the second subject is plural, the verb must be plural
For example:
Each of the the boys in the class is punctual (Singular
subject)
Neither Sanya nor Richa is attending the class
(Singular subject)
Either Tom or his neighbours are making noise (Plural
subject)

How can they say when either each / neither comes are in singular form? For eg Either Anirudh or his friends [are] responsible for the class.

How can they say when either each / neither comes are in singular form?

For eg Either Anirudh or his friends [are] responsible for the class.