根据句意和汉语注释，写出单词的正确形式。
The famous host will show us an ______________ (最新的) invention later.
It is __________(或许) the best movie I have ever seen in my life.
China’s information ____________(技术) has been greatly improved in the past few years.
These days a mobile is an ___________ (工具) which is used in daily communication.