10. By the middle of the 21st century , the vast majority of the world’s population ________ in citi

题目简介

10. By the middle of the 21st century , the vast majority of the world’s population ________ in citi

题目详情


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 livingB.will be livingC.have livedD.will have lived
题型:单选题难度:偏易来源:不详

答案

 B

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