根据句意和汉语注释，写出单词的正确形式。
Our English teacher has offered us some useful _______________ (建议). I think it will help us a lot in our English study.
Here are two _____________(音乐会) tickets for you.
Daniel ______________(不愿)  to accept my books ,which made me very sad.
___________(比较) this new TV set with the old one, you will see which is better.