Before I could stop him , the boy 'was throwing' the box down the stairs .
A
were throwing
B
threw
C
did throw
D
no improvement
Correct Answer: threw
Sentence টির গঠন অনুসারে শেষ বাক্যাংশটি simple past হবে। সুতরাং সঠিক উত্তর (b) threw হবে।