The issue of protecting cultural heritage was of _______ importance _______ we could not afford to ignore it.
The magician picked several persons from the audience and asked them to help him with the performance.
He has left his book here on _____, so that you can read it.
I remember her face but I cannot _____ where I met her.
The climbers _____ their ambition by reaching the summit of the mountain.
It has always been the _____ of our firm to encourage workers to take part in social activities.