n. a person who has special skill or knowledge relating to a particular subject
When your computer breaks down, it is better to leave it to expert.

adj. absolutely needed
It is necessary to study before the test.

n. something that is caused by something else that happened, or was done before
John''s doctor was very happy with his test results.

adj. very interesting
Have you heard of this fascinating story?

n. a piece of work that has been given to someone
My task for the weekend was to clean the entire back yard.

n. a regular way of doing things in a particular order
Walking to work is part of my daily routine.

n. an activity in which people are asked questions to gather information about what people do or think about something
We took a survey to see how kids reacted to the new standard.

v. to succeed in doing something
He accomplished his goal of running ten miles.

adj. of or relating to medicine
Medical students learn how to be doctors.

n. a suggestion about what should be done
Be sure to follow your daily sodium recommendation.