◎ 题干
Sleeping with the lights on is a waste. You had better _____ all the lights are off before you go to bed.
[     ]
A. make sure
B. look for
C. try out
D. think hard
◎ 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“Sleeping with the lights on is a waste. You had better _____ all the lights are off before you go to bed. [ ]A. make sure B. look forC. try out D. think ha…”主要考查了你对  【动词短语】  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。