◎ 题干
Sleeping with the lights on is a waste.  You'd better______all the lights are off before you go to bed.
              
[     ]
A. look for                
B. try out              
C. make sure              
D. think hard
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Sleeping with the lights on is a waste.You'd better______all the lights are off before you go to bed.[ ]A. look for B. try outC. make sure D. think hard…”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。