Помогите пожалуйста сделать домашку по английскому языку. 
Change the sentences.Use nobody/ nothing/nowhere.
Model;You won't have to do anything.-You will have  to do nothing.
1.There isn't anywhere for me to sit.
2.I don't  think anybody knows the secret.
3. There isn't   anything in this book that is easy to understand.
4.She doesn't know anything about babies.
5.She won't say anything about it.
6.There isn't anybody in the room.
7.The dog won't go anywhere without Billy