China has a growing number of middle-class parents who _____ for years to get their only child into

题目简介

China has a growing number of middle-class parents who _____ for years to get their only child into

题目详情

China has a growing number of middle-class parents who _____ for years to get their only child into a top school.
A.had been savedB.have saved
C.had savedD.have been saved
题型:单选题难度:偏易来源:不详

答案

B

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