Living in a highly     society, you definitely have to arm yourself with modern technology and skills.

Make sure that the machine is kept where it is not ____ to children.

Tom was at a loss as to how a car worked, so it was ______ that he knew nothing about how to repair cars.

The pianos in another shop will be________， but________.

China won 100 medals in the Beijing Olympic Games, which is almost _____they won at the Sydney Olympic Games.