The boy’s parents, who let him play football indoors, rather than the boy to blame for th

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A. was
B. be
C. to be
(答案→)D. were
解析：rather than意为“而不是”，连接主语时，其谓语动词的单复数与rather than前面的一致。本句子的主语为The boy’s parents，故谓语动词用复数形式。句意为：打碎窗户该责备男孩的父母而不是这个男孩，他们让他在屋里踢足球。