根据句子意思，用括号中所给单词的正确形式填空。(每空限填一个单词)
【小题1】Like _______________(human),  cats and dogs eat both meat and plants.
【小题2】If you get ____(lose) in the cave, stay calm and don't try to feel your way out. Wait for help.
【小题3】It's not ______________ (nature) for a child of his age to be So quiet.
【小题4】You can _________ (easy) make up an excuse to avoid going out with someone you don't like.
【小题5】The old man was in hospital for six months with a serious___________ (ill).