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英语单选1道Aftertheadjustmentoffinancialpolicies,manynetizensputupposts,90percentcarriedthemessageofapproval.A.ofwhichB.ofwhom选什么?为什么?

题目详情
英语单选1道
After the adjustment of financial policies, many netizens put up posts, 90 percent _______ carried the message of approval.
A. of which B. of whom
选什么?为什么?
▼优质解答
答案和解析
A.of which
根据句意,先行词是posts