10．A．I'm watching TV．               

B．I'm in the USA．                 

C．It's warm and humid．

9．A．No，he isn't．                     B．yes，he docs．                     C．No，they don't．

8．A．An assistant．                      B．I'm a reporter．                     C．He's a waiter．

7．A．Yes，it is．                        B．No，there isn't．                   C．No，there are．

6．A．He's a musician．                  B．He likes Sydney．                 C．In Paris．