Here ___a series of comic books on my shelf, some of which i have read twice. A. are B. have C. has D. is

问题描述:

Here ___a series of comic books on my shelf, some of which i have read twice. A. are B. have C. has D. is
求答案和详细理由.好评

D is
a series of + 名词做主语时谓语用单数
这是主系表结构,故选is
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