根据句意和汉语注释，写出单词的正确形式。
1.Bears (熊) like ___________(搜寻) fish oh the icy river.
2.Sometimes the boy_____________(与…打架) with his neighbor about something.
3.Some animals have much ________________(软毛)and it can keep them warm.
4.My parrot is good at _____________(重复) the words I say.
5.It isn’t any_____________(麻烦) to keep goldfish.