需要

Love doesn't cost money, but it does require payment of your heart.

Many problems call for a solution.

It takes me ten minutes to walk to the bus stop.

If there is anything you need, just let me know.

if need(s) be

require assistance

require prompt handling

demand/entail great patience

need checking/cleaning/repairing

need/entail considerable time and energy; make heavy demands upon (sb's) time and energy

need to be reformed; there is a need for reform

require secrecy

need help; be in need of help

Necessity is the mother of invention.

owing to the need of the work

physiological/psychological need

acute/crying/pressing/urgent need

spiritual/material need

basic/fundamental needs; bare necessities

personal need

fulfil/serve/satisfy/meet/answer the need(s) of; meet/serve the demand(s)

voice one's needs