Populate instead of fill in the blanks
Or "loan" instead of borrow or lend (with their different actions:taking or just giving), to me "loan" is only for monetary purposes..
I descibe it to you as I was told on my English classes:
"Loan" is something given (somebody's possession given another person) => another person BORROWS
"To be on loan" - to be given => TO BE LENT, verb - LENT STH
It is also:
LENT - person has something and gives it to the second one (one direction)
BORROW - person doesn't have required thing and asks for this, she/he borrows (one direction, too)
LOAN - two directions: exact loan / be on loan.
Loan isn't only for monetary purposes, but it is mainly used in banks for shares, bills, crucial stuff. You won't tell I want pencil, loan me, but pencil may be on loan I think.