Your spoken Russian is so good. Have you been abroad? -- Yes. I in Russia for two yea

问题补充：

-- Your spoken Russian is so good. Have you been abroad?

-- Yes. I in Russia for two years.

A. stay

B. stayed

C. had stayed

D. have stayed

答案：

A. stay

(答案→)B. stayed

C. had stayed

D. have stayed

解析：考查情景交际和时态。句意：--你的俄语口语真好。你有出国经历吗？--是的。我在俄罗斯待了两年。根据“Have you been abroad”可知，现在已经回来了，排除D；C项指“过去的过去”，对话没有出现过去时的动词，排除C；根据答语可知，是发生在过去的事情，使用一般过去时，故选B。