◎ 题干
— I'm leaving now. 
— ______ you turn off the lights.
[     ]
A. To make sure
B. Make sure
C. Made sure
D. Making sure
◎ 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“— I'm leaving now.— ______ you turn off the lights. [ ]A. To make sure B. Make sureC. Made sure D. Making sure …”主要考查了你对  【祈使句】  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。