Miss Jones music at Bardon School for five years when she was abroad and now she has been

问题补充：

Miss Jones music at Bardon School for five years when she was abroad and now she has been appointed of our school．

A. had taught; president

B. has taught; the president

C. taught; president

D. has been teaching; the president

答案：

A. had taught; president

B. has taught; the president

(答案→)C. taught; president

D. has been teaching; the president

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