补全对话。
请根据对话内容，在对话空白处填入一个适当的单词，使对话意思完整与正确,并将答案填在答题卡相应的横线上。
W: How much is the watch?
M: 540 dollars.
W: That’s a little 1 .
M: It’s made in Switzerland. You can have it for 510 dollars today.
W: Oh, dear.
M: What’s the 2 ?
W: I can’t find my purse.
M: Maybe you’ve 3 it at home.
W: That’s impossible! I bought a book half an hour ago.
M: I remember! Were you here with your brother?
W: No. I am here 4 .
M: I saw a boy take something 5 of your bag. I thought he was your brother.
W: What should I do?
M: You should call the police. Maybe they can help you.