The relative pronoun that is only used in identifying (restrictive) relative clauses.

The boy who stole the bicycle has been caught. OR The boy that stole the bicycle has been caught.

Who

Who is used only of persons.

Who is there?
Who won the first prize?
Who will be the next Chairman?
Whose is this coat?
Whom did you invite to preside over the meeting?

Fill in the blanks with appropriate relative pronouns.

1. He got married again two months later ………………….. surprised everybody. (which / where / what)

We use who when referring to people. We use which or that when referring to animals or things. Note that that can be used in place of whom when referring to people.

As a general rule, who is used for persons only. It may refer to a singular noun or a plural noun.

Fill in the blanks with suitable relative pronouns

1.    We always like students ——————- speak the truth.

a)    Who
b)    Whom
c)    Which
d)    That

Fill in the blanks with who or whom