The correct option is C poured
The word that fits in place of italicized word in both the sentences is option B , poured. Poured means flow quickly in large amounts or to run. It is also used if we want to say that it is raining heavily. The context of the first sentence is that huge crowds quickly rushed into the hall as soon as the doors opened. Second sentence means that water rushed into the village as soon as the dam broke. Option A, 'drained' means to empty out . Option C, 'gushed' means burst or rush. Option D 'threw' is past tense of throw and it means to send something through air with force. Thus, options A, C and D are incorrect and the correct option is option B, poured.