drowned; to end; to die; to inundate

haven't; hasn't; doesn't exist; to not have; to not be

it's not important; it's nothing; never mind; to have nothing to do; to be free; to be all right (out of danger or trouble)

that's right; sure!; rest assured!; that's good; can't go wrong

(before a noun) Do (you, they etc) have ...?; Is there a ...?; (before a verb) Did (you, they etc) (verb, infinitive)?; Have (you, they etc) (verb, past participle)?