根据句意及汉语提示填空。
【小题1】Hainan Island is in the _________ (南方的) part of China.
【小题2】She couldn’t _________ (接受) our invitation because she was too busy.
【小题3】It’s difficult for him to make a _________ (决定) now.
【小题4】They were _________ (讨论) the food of western countries.
【小题5】—Which is the most _________ (传统的) festival of China?
—Spring Festival.