补全对话。
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!
