Neela _____ her hand when she was cooking dinner'. The right option will be -

• সঠিক উত্তর হলো - burnt.
• অতীত কালের দুটি কাজের মধ্যে চলমান কাজটি Past continuous tense হয় এবং অন্য কাজটি past indefinite tense হয়।
- এ ধরনের বাক্যের structure হলো-
• When + subject (1) simple past + subject (2) + past continuous.
- When Henry arrived home after a hard day at work, his wife was sleeping.
• Or: Subject (1) + past continuous + when + subject (2) + simple past. 
- We were doing a test when the lights went out.

সূত্র: Advanced Learners Communicative English Grammar and Composition (For Class 9-10).