VERBS

be

ADV

almost
the course's almost exclusive concentration on grammar
not necessarily
The recording deal is not necessarily exclusive. The band can record material for other companies as well

PREP

to
These products are exclusive to our shops

VERBS

be
become
remain
keep sth
The owners of the golf club are determined to keep it exclusive

ADV

very
quite, rather, somewhat
a somewhat exclusive venue
necessarily
The school is expensive and necessarily exclusive
racially, socially

VERBS

be

ADV

mutually
The two options are not mutually exclusive (= you can have them both)