Английский язык 9 класс
Помогите пожалуйста 2 и 3 задание

2 Circle the correct tense in each sentence.

1 By the time Alina started the project, she had been saving animals for 5 years.

2 Before he moved to Africa, he had called them to ask for more information.

3 It was the first time I had worked on a computer.

4 Dad phoned before I had finished the letter he asked me to write.

5 Mr Mustabekov worked as a teacher for a while and then decided to apply for a job in a charity organisation.

Correct the sentences that have mistakes in them. One sentence has no mistakes. Which one?

1 The children were quite tired because they had been baking cakes all evening.

2 Because he had never been a volunteer, my brother didn't know what to expect.

3 Somebody else organised the charity event before I had a chance to start the project myself.

4 Bolat had been studying all day so he was really tired when he got home from work.