in seated position. Being painted or photographed by an artist. To take an exam.

systematic investigation into and study of materials and sources. investigate systematically.

entered or recorded on official list or directory. To record your name on an official list; sign up.

experience dreams.

set or category. Groups that share some things in common. To rank people in society from high to low.

expert on diet and nutrition.

(Showing speaker is affected by their own action).

Option on a device that can be changed, e.g. sound. To become hard (of glue, concrete etc.).

extending or moving uniformly in one direction only. in straight line. part of something that is not curved.

emitting smoke or visible vapour. The act of enjoying cigarettes, pipes, cigars, etc.. To breathe in through a cigarette, etc..

(of bid) requiring by convention response from one's partner, no matter how weak their hand may be. To use physical strength or violence to persuade.

firm decision to do or not to do something. Promise made to accomplish something.

Teacher who teaches at a college or university.

Being good or useful. positive quality.

Set of questions in a text book. To retain your ability or practice your skills.