문제풀다가 모른것이 있어서 질문드립니다 

다 맞는것 같은데 모르겠네요 기초가 부족해서리

이 중에 틀린 문장은 몇개이고 알맞게 고치면 어떻게 답이 되나요
she chose talking wiith her employer
they require you annoncing your decision
it is diffcult describing this occupation
they found a suiable apt for him renting
we are wating for her submiting the portfolio