14.
Your Answer is
Correct Answer is J
Explanation
According to the meaning of the sentence "Once the flames are out, she uses bricks to build a firebox..." Choice J is correct.
Item F: having died down is the adverbial of the sentence, the logical subject should be consistent with the sentence subject (she), and the semantics are wrong.
Item G: finally is a related adverb and cannot connect two sentences.
Item H: the with table is accompanied, there is no accompanying relationship here.