Réponse:
C ) They correspond to the sounds of the bombs.
D ) The gigantic dome of... is on fire. "The greatest of all the fires [...] the gigantic dome of St Paul's cathedral.
E ) The sky is red and angry. However, there is a cloud of smoke which is all in pink, like a ceiling in the vast Heaven.
F ) The narrator borrows a "tin hat" to go out among the fires.