Question

Подчеркните и укажите, к какому классу принадлежат местоимения.
1)If life takes an unexpected turn, a person discovers often that he can only depend on himself.
2)This is all I can say on the subject.
3)We can offer someone to do something, but we shouldn't force anyone.
4)Neither side has a motive to compromise at the moment.
5)One should always be careful when he operates this machine-tool.

Answer 1

1) he - personal pronoun (личное); himself - Reflexive pronoun (возвратное);  2) This - demonstrative pronoun (указательное); I - personal pronoun (личное); 
3) We - personal pronoun (личное); someone, something, anyone - Indefinite Pronouns (неопределенные); 
4) Neither - indefinite pronoun (неопределенное);  5) One - indefinite pronoun (неопределенное); he - personal pronoun (личное); this - demonstrative pronoun (указательное)