... keeping with

........ tradition, the bride wore white at her wedding.

The negotiator offered a substantial sum of money ....... the safe release of the hostages, hoping to resolve the tense situation peacefully.

......... the company's new environmental policy, employees are expected to reduce their carbon footprint and become more environmentally friendly

on behalf ....

.... exchange ....

The outdoor music festival had to be postponed until the following weekend ........ the severe weather conditions,

The charity organization held a gala dinner ..... youth education programs.

... place ...

.... means of

in exchange ....

... keeping ....