the last time I（ ）Sandy,she（ ）in beijingA had seen,was workingB saw,workedC had seen,workingD saw,was working求原因

the last time I（ ）Sandy,she（ ）in beijingA had seen,was workingB saw,workedC had seen,workingD saw,was working求原因
the last time I（ ）Sandy,she（ ）in beijing
A had seen,was working
B saw,worked
C had seen,working
D saw,was working
求原因

the last time I（ ）Sandy,she（ ）in beijingA had seen,was workingB saw,workedC had seen,workingD saw,was working求原因
D saw,was working
以回忆的口吻说 “我最后一次见到三迪的时候,她正在北京工作”.

D saw，was working
过去范畴

D saw，was working

D