Now listen to the following recording and answer questions 23 to 25.

A．Clean up and repair the hole by silver alloy filling.
B．Clean up and cover the tooth with a porcelain crown.
C．Pull out of the tooth after using the local anesthetic.
D．Fit an artificial tooth after using the laughing gas.

A．She can cancel it anytime by free.
B．She can transfer the unused minutes to another phone.
C．She has to sign another agreement with the company.
D．She has to pay fees to the company.