Fengjun，_______ president of Aigo Technology Company, is the second Chinese billionaire to promise        _________all-donation after Chen Guangbiao.

At the conference, people of different _______ were given a chance to exchange theirs with each other. 

If you want to see the chairman of the department, you’d better make an _________ with his secretary first.

The _____ of his clothes indicated too clearly that he had been playing football.

 I have no _____ that you will succeed, but I wonder whether you have really got everything ready.