I __________ (study) for hours before I finally __________ (understand) ...

Topics: Narrative Tenses

I __________ (study) for hours before I finally __________ (understand) the concept.

A. studied, understood

B. was studying, understood

C. had studied, understood

D. had been studying, understood

Select your answer:

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Having no regret or sense of guilt.

A. Remorseless

B. Acrid

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