根据n多题专家分析,试题“Every means _____ tried but without much result. [ ]a. has been b. have been c. ared. is …”主要考查了你对 【被动语态】,【现在完成时】,【主谓一致】 等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。
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