对话填句子 （每空一句）。
A: Do you know Nancy found $100 in the street this morning?
B: Really? What did he do then?
A: 1. . The police wrote down his name and address and told him if no
one came to get the money in a week, he could get the money.
B: Wow! How lucky he is! 2. ?
A: First, I'd try to look for the owner. Then, 3. . I think the teacher
could help find the owner. What about you?
B: 4. . My bike has just broken.
