1. Hardly he had left the office, when he realized that he had forgotten to turn off the lights

[চট্টগ্রাম বিশ্ববিদ্যালয় ভর্তি পরীক্ষা ২০১৩-২০১৪ ইউনিট-c : 2014]

1. Hardly he had

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2. when

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3. realized

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4. had forgotten

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5. turn off

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Answer
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