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By the middle of the 21st century , the vast majority of the world’s population

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By the middle of the 21st century , the vast majority of the world’s population

10. By the middle of the 21st century , the vast majority of the world’s population ________ in cities rather than in the country.

  A. are living              B. will be living            C. have lived         D. will have lived

试题答案

B