◎ 题干
On Sunday Jane has nothing to do but watch TV to ________ her time.
A.save B.cost
C.spare D.kill
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“ On Sunday Jane has nothing to do but watch TV to ________ her time. A.saveB.costC.spareD.kill…”主要考查了你对  【过去完成时】【过去完成时的被动语态】  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。