Identifying Indefinite Pronouns 1

Indefinite pronoun in: 'Everybody enjoys a good movie.'

Indefinite pronoun in: 'One sang while the other played the guitar.'

Indefinite pronoun in: 'Nobody knows the trouble I've seen.'

Indefinite pronoun in: 'The secret was known by few.'

Indefinite pronoun in: 'No, the secret was known by many.'

Indefinite pronoun in: 'Calculus is too hard for some.'

Indefinite pronoun in: 'Surely you recognize somebody.'

Indefinite pronoun in: 'Is there anything that I can do?'

Indefinite pronoun in: 'Is somebody going to stand up and share their report?'

Indefinite pronoun in: 'Some of my questions are not answered.'