The past tense of refuse is refused. The third-person singular simple
What type of verb is refused?
transitive verb. 1 : to express oneself as unwilling to accept refuse a gift refuse a promotion. 2a : to show or express unwillingness to do or comply with refused to answer the question. b : to not allow someone to have or do (something) : deny they were refused admittance to the game.
What tense is the verb has?
Have or has is used with a past participle to form the present perfect tense. This tense designates action which began in the past but continues into the present, or the effect of the action continues into the present.