How the pronoun reference became faulty?

Question

1. Jake told his brother that he ought to get out and enjoy the fresh air.
2. Ted threw the plate through the window and broke it.
3. I knew nothing about economics which my instructor had not learned.
4. Heidi told her mother that she should learn to type.
5. He joined a commune because they share everything there.
6. After I heard Segovia play the guitar, I decided that that was what I wanted to do.
7. Wheat is one grain from which they make bread.

Answer 1

I’ll get you started.

1. Who is “he”? Jake or his brother?

2. What did Ted break? (What is "it"?) The plate or the window?

3. What had the instructor not learned? (What is "which" referring to?) Economics? Or that I knew nothing?

Now you go through the others and ask questions about them. Post your answers if you want them checked.