补全对话，根据所给对话填写适当内容，使其完整，正确(每空词数不限)。

Jane: Good morning, Harry! What are you reading now?

Harry: Hi, Jane. .

Jane: Ancient Rome? Sounds interesting! ?

Harry: Oh, I have read the book for a few hours. I'm a little tired and want to go for a walk.

Jane: Good idea. I saw a bracelet(手环) on your left hand. ?

Harry: It is used for getting information about how many steps I take during a day. Jane: That is such an amazing invention!

Harry: And it sends the information into my mobile phone and also I will know how many steps other friends take if they have bracelets as well.

Jane: yesterday?

Harry: Umm, it was Alex. He took more steps than others, and he is always on the top of all my friends.

Jane: Great! He really enjoys walking. Now let's walk together!

Harry: .