One of the main __________ of the summit was “sustainable development”,or the question how we can continue developing the world without damaging the environment.

New mineral resources may be discovered during the forthcoming Antarctic _____.

On the top of the mountain we saw that the scenery was very _________ and we simply couldn’t tear ourselves away.

The purpose of the campaign is to raise the public’s_______ of the dangers of passive smoking.

It doesn’t make a(an)_______to me whether you go or stay.