22. —Mr. Smith in Russia for 10 years. —No wonder he can speak Russian fluently and now t

发布时间：2020-08-16 06:16:54


22. —Mr. Smith      in Russia for 10 years.
—No wonder he can speak Russian fluently and now teaches Russian in a Chinese college.
had stayed                    B. has stayed              C. stayed                  D. stays

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