45．A．am                B．are              C．is                 D．be

A

Emma is my friend．Her full name is Emma Miller．She has a sister．Her sister's name is Amy．They like playing tennis very much．Every day alter dinner，Emma usually plays tennis with her sister．They often play for three hours（小时）．After（在……之后）playing tennis，Emma and Amy do their homework（家庭作业）．After doing their homework，Emma watches TV．But Amy doesn't like watching TV．She likes playing computer games．They are good sisters．And they are good friends，too．