[ Vocabulary ]
Which word best completes the following sentence?
We should _______ energy by turning off lights when they’re not in use and using energy-efficient appliances.
A. conserve
B. befuddle
C. debut
D. induce
E. vacate

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A. will come
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He __ a teacher.
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I’m asking you … I want to know your opinion.
A. because
B. because of
