He chose to teach in a mountain village though he in the city for a better life. A. could

问题补充：

He chose to teach in a mountain village, though he in the city for a better life.

A. could stay

B. would stay

C. could have stayed

D. should have stayed

答案：

A. could stay

B. would stay

(答案→)C. could have stayed

D. should have stayed

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