I first met Lisa three years ago. She           at a radio shop at the time.

A. has worked             B. was working

C. had been working        D. had worked

I first met Lisa three years ago. She ______ at a radio shop at the time.

A. has worked 　　　　　　　B. was working

C. had been working 　　　　 D. had worked

I first met Lisa three years ago. She_____ at a radio shop at the time.
    A. has worked  B. was working  C. had been working     D. had worked

I first met Lisa three years ago. She ________ at a radio shop at the time.

[　　]

I first met Lisa three years ago. She _________ at a radio shop at the time.

[　　]

A．has worked

B．was working

C．has been working

D．had worked

21.[1997全国] I first met Lisa three years ago. She ________ at a radio shop at the time.

 I first met Lisa three years ago．She ____ at a radio shop at the time.

 A．has worked   B．was working   C．had been working   D．had worked

A．has worked

B．was working

C．had been working

D．had worked