Is she at home?副词部分是哪里?Food here is hard to get.“hard”不是形容词吗

She is going to work hard at English this term.对work hard at she is going to work hard at English this term 对work hard at hard是形容词还是副词? she doesn't study hard ,其中hard是副词吗? she is a person who is hard to get along with为什么用to gei alon True it is hard to make accurate predictions.true是做副词用吗? Catherine is a girl who is hard to p（ ） and she doesn’t get she is hard to take care of Everything is hard to be good at A hill is hard to get up and a pill is hard to get down. love is hard to get into butharder to get out It is raining so hard.we ahve to stay at home .we have (无处）t