Miss Jones once         　music at Bardon School for years and now is an actress．

A．has taught               B．taught              C．had taught               D．teaches

—Miss Jones once ________ music ________ at Bardon School for two years and is now an actress.

—No wonder I often hear her sing in the garden.

[　　]

－Miss Jones once _________ music at Bardon School for ten years and now is an actress.

－No wonder I often hear her sing in the garden. y

       A．had taught       B．taught       C．is teaching       D．has been teaching

－Miss Jones once _________ music at Bardon School for ten years and now is an actress.

－No wonder I often hear her sing in the garden. y

       A．had taught       B．taught       C．is teaching       D．has been teaching

－Miss Jones once ______ music at Bardon School for ten years and now is an actress．

－No wonder I often hear her sing in the garden．

A．had taught           B．taught          C．is teaching          D．has been teaching

—Miss Jones once 　　　　　　music at Bardon School for ten years and now is an actress.

　 —No wonder I often hear her sing in the garden.

　 A．had taught　 B．taught　　　 C．is teaching D．has taught