б.)
1) I don’t like people (who/which) hate animals. 2) The question (who/which) you are asking me is very difficult.3) The children (who/which) are playing in the garden are my brother’s friends. 4) The jobs (who/which) he did in his young years were all very interesting. 5) The mice (who/which) live under the floor get out at night.
2)which
3)who
4)which
5)which