Besides proper diet, exercise is one of the key ___________of a healthy lifestyle.

Less than twenty percent of the employees in their company are women. That is to say, men are in the        .

Having lost all their _____ in a big fire, the Blacks had to depend on their friends and relatives for a living.

The sentence doesn’t make any             , no matter how you read it.

Finding information in today’s world is easy．The      is how you can tell if the information you get is useful or not．