A. studnets's B. students'
A. the center of the city B. the city's center
A. Du Fu's and Li Bai's poems B. Du Fu and Li Bai's poems
A. the weather report of today B. today's weather report
A. four pound of beef B. four pounds of beef
A. Mary's and John's B. Mary and John's C. Mary's and John D. Mary and John
A. Jim's father's B. father of Jim's C. father's of Jim D. Jim father's
A. Teacher; a student B. The teachers; students C. Teachers; students D. Teachers; a student
A. Japanese; Germen B. Japaneses; Germen C. Japanese; German D. Japanese; Germans
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