根据对话内容，用适当的句子补全对话，使对话意思完整，每空一句。

　　A：Hello，may I speak to Bruce，please?

　　B： 1  . I’ll see if he is in．

　　(A few minutes later)

　　C：Hello! Bruce here．

　　A：Hello, Bruce! This is Bill speaking．It’s Sunday tomorrow．What are you going to do?

　　C： 2 . Do you have any ideas?

　　A：I hear many old inventions will be shown in the science museum tomorrow．3 ?

C：Good idea． 4 ?

　　A：Let’s meet outside the school gate at half past eight in the morning．

　　C：How shall we go there?

　　A： 5 .

　　C：Sorry，my bike is broken．Let’s go by bus，OK?

　　A：All right．See you!

　　C：See you