Complate the sentences. Use the past perfect or past simple from

1. I had heard the news before she told me about it.

2. I watched the film after I had read the book.

3. I phoned Alex after I had sent him the email.

4.  The disco didnt finished when we had left, but we couldnt stay.

5. When I arrived at his house, the party hadnt started yet.

6. People hadnt invented mp3 players when Gran was young.

7. He played the piano really well because his dad had taught him.