She realized that she ___ turned the lights off.

Haven't

Hadn't

Didn't

None of these

She realized that she hadn't turned the lights off.

اسے احساس ہوا کہ اس نے لائٹ بند نہیں کی تھی۔

Hadn't is the best to keep the meaning of the original sentence.

Hadn't is a verb, used in past sentence

SH4-8-2023