An increasing number of students, year by year, across China ____ hard to realize their dream of studying abroadA.is tryingB.are tryingC.will tryD.have tried
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B解析试题分析：考查时态和主谓一致：句意：随着学生数量的越来越多，整个中国都在努力实现他们出国学习的梦想。从句意看是现在进行时，主语是China，因为后面用their，所以这里指中国人，谓语是复数，选B。
考点：考查时态和主谓一致