阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
(2015·山东省临沂市二模)
Nowadays，the ice bucket challenge is among the __1__(hot)news of all.It is an activity __2__(hold)by an American charity organization.It not only helps the sick people to get the money to heal their disease，but also makes more and more people aware __3__ the disease，so that they can give more care to the patients.
