I have been a film director ______ 1980. (A. since / B. for)
A. since
I have played badminton ______ seven years. (A. since / B. for)
B. for
I have been a scientist ______ 1999. (A. since / B. for)
A. since
I have been an athlete ______ ten months. (A. since / B. for)
B. for
I have played the violin ______ March. (A. since / B. for)
A. since
Andy has become a singer ______ last year. (A. since / B. for)
A. since
Judy has lived in Japan ______ many years. (A. since / B. for)
B. for
Mr Chan has been a writer ______ he was 28 years old. (A. since / B. for)
A. since
