A．He thinks he can put off the job.
B．He thinks he can do it successfully.
C．He is not certain if he can accomplish it.
D．He is not sure if he can do it independently.

A．To create feelings of happiness for the young by singing.
B．To promote a healthier life style among young people.
C．To close the gap between the older generations and the young.
D．To change the attitude of the young towards work.