Пожалуйста помогите сделать 2, 3, 4 задание

2.

1)Saved

2)Called

3)Working

4)Had finished

5)Decided

3.

3)

4.

1) When I started working here, it was the first time I working in an international organisation.

2) Luckily, we already writing the report when the boss arrived.

3) I'm waiting for the school bus for 15 minutes when it finally turned up.

4) Sholpan decided to speak to her parents because she has problems with her classmates.

5) Azamat works as a volunteer before, so he knew exactly what to do.

6) My friend trying to raise money for month when he finally found a sponsor.