The initial idioms of the letter K

keep one's word	keep oneself to oneself
keep opinions to	keep options open
keep (one's) slate clean	keep out
keep out from under feet	keep out of the way
Keep out of this!	keep own counsel
keep pace	Keep pecker up!
keep people straight	keep place
keep posted	keep powder dry
keep a promise	keep shirt on
keep schtum	keep sight of
Keep smiling	in the picture
out in the cold	keep at arm's length from
at bay	leave for another occasion
keep (something) straight (in one's mind/head)	keep step
keep sweet	keep tab