The initial idioms of the letter B

be in (one's) blood	be in (one's) cups
be in (one's) pocket	be in it for
be in on the act	be in over head
be in pocket	be in pursuit
be in shoes	be in tall cotton
be in the/ blood	be in the balance
be in the can	be in the catbird seat
be in the eye of the storm	be in the right place at the right moment
be in the running	be in deep shit
be in the swim	be in the thick of
in touch, be	in good with, be
be in with a chance	be into
be it as it may	be just before you're generous
be just the same (to someone)	be kept in the loop
be kicked to the curb	be kicked upstairs