fill in the blank

blank out

To become blank.

draw a blank

To be unable to recall a required piece of information.

fill in

To inform somebody, especially to supply someone missing or missed information.

fill one's boots

To perform at a high level in one's official role.

fill one's face

To eat, especially in a hearty or greedy manner.

fill one's hand

To draw one's handgun, especially for an armed confrontation.

fill someone's shoes

To do (somebody's) job; to perform or assume (somebody's) role.

fill up

To annoy, or displease, by taunting, or by excessive nagging.