Nowadays little knowledge __ to be a dangerous thing.

Manycareersrequireacollegedegree;somejobs,________,onlyrequirepreviousexperience.

The president is to give a formal __ at the opening ceremony.

You'dbettertakethesedocumentswithyou__youneedthemforthemeeting.

Don’t ask him how old he is. He’s really ____about it.