Fill in the blanks, each using o

Fill in the blanks, each using one of the given words or phrases below in its proper form.
replete with   delve into  stem from   cater for   bear out   draw on   take one's place   on the go   in the justice of   with respect to   comply with   deficient in
To find out the truth, I think we must_________the past for some link with what is happening here today.
【正确答案】：delve into