1. What are Billy and Jacob's feelings towards Bella?
Billy is glad she's home, for Charlie's sake; he's also protective over her, likewise, for Charlie. I think he likes Bella, he's just realising that she's not the child he knew; she's grown up, and she has a lot of secrets that no one else knows. At this point, I'd say he's becoming a little on guard around Bella, wondering what else she might know. Jacob has a crush on Bella, flat out.
2. Charlie says he's aware that he leaves Bella alone too often, and Bella responds that she doesn't mind beign alone. She further adds that she's a lot like Charlie. In what ways do you see them as being alike?
They're both quite quiet and reserved in social situations. They have the same dry sense of humour, and the same ability - preference, sometimes - to cope alone. They're both very independent and a little head strong.
3. Edward's questions continue and today he asks Bella about people: family and boyfriends. Why did he save those questions for the second day of questioning?
I think he wanted to build an idea of her in his head of the basic things before the conversation turned a little more serious. He already knew a fraction of her family situation - Renee and Phil - and sensed that it was more sensitive of a topic; plus, already knowing a little bit about that would take a backseat to things he had no idea of. The previous questions were niggling things he'd have already known with anyone else, that were bugging him; the second day questions were more intense as he'd had time to think about what he wanted to ask, now that he already had some answers. Also, it was a way to keep the world to just the two of them; discussing potential ex-boyfriends would shatter the illusion of it just being the two of them in the world, hiding in a car from the rain.
4. Why do yo think Edward wrote the words "Be Safe".
He's all too aware of Bella's track record in the safety department! It's as relevant as anything. He wants to remind her to do that, and I think a part of him wanted her to know he'd be thinking of her.