We should ________ adjust ourselves to thedevelopment of our society.

there is 70% ofwater on the planet, only about 1% of that water is drinkable.[ ]

No one can be sure in a million years.

People will thank the firefighters for the things they do to stop fires ________ the environment safer.[ ]

Who would you like to ____ to the cinema with you this evening? — No one I would rather stay home this evening