1. 听独白，填信息

1. （1） The speaker thinks handshaking is .
3. （2） Besides goodbye, handshaking also expresses .
5. （3） If Bob meets his teacher in the street, should offer a hand first.
7. （4） When a host meets a guest, should offer his hand first.
9. （5） When the guest wants to to the host, the guest should offer his hand first.