Ответы и объяснения

Лучший Ответ!
1. used to work
2. used to be
3. used to send
4. used to live
5. used to come
6. used to be

1. After I had read the book, I decided to buy a new one.
2. After I had read the second book, I tried to write my own story.
3. After I had finished writing the book (the story), I sent it to publishers. 
4. After the publishers had read my book (my story), they decided to publish it.
5. After my book had become a bestseller, I decided to write another book.