【英语】如下一题求高手解答!

【英语】如下一题求高手解答!
用下列所给单词填空.

fun；boring；interesting；difficult；relaxing
I think taking a walk is very ___.
He doesn't like Chinese.He thinks it is ____.
This book is very ___.We like reading it.
His brother is ___.We like playing with him.
The math problem is too ____.I can't work it out.