Resposta :
- Forma negativa:
a) Volunteers have not done a lot to help those in need.
b) They have not chosen the best books for the children.
c) This job has not taught my brother how to cope with difficult situations
- Forma Interrogativa:
a) Have the volunteer done a lot to help those in need?
b) Have they chosen the best books for the children?
c) Has This job taught my brother how to cope with difficult situations?
Espero ter ajudado,
Bons estudos!