Before you leave the office,______ all lights are out.

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问题 Before you leave the office,______ all lights are out.

选项 A、see which
B、seeing that
C、to see that
D、see to it that

答案D

解析 考查祈使句。句意为“在你离开办公室前,______所有的灯都已关闭”。根据句意可知。后半句应为祈使句,表示一种命令或建议,因此,空格处应填入动词的原形形式,see to it that“确保”,其他选项形式皆不符合题意,故选D。
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