Before her first Harry Potter came out in 1997，J.K.Rowling English for a living in Portugal.
A. is teaching
B. had taught
C. has taught
D. would teach
网友回答
A. is teaching
(答案→)B. had taught
C. has taught
D. would teach
解析：句意：在J.K.Rowling的第一部《哈利·波特》于1997年出版之前，她一直在葡萄牙靠教英语谋生。根据句意可知，教英语这一动作发生在1997年之前，表示过去的过去，所以用过去完成时，选B。