﹣Don't keep the lights on when they're not in use!
﹣____（ ）
A．Not at all．B．Sorry， I won't．
C．No， thanks．D．I'm afraid so．
﹣Don't keep the lights on when they're not in use!
﹣____（ ）
A．Not at all．B．Sorry， I won't．
C．No， thanks．D．I'm afraid so．
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