unwelcome or harmful matter. Questions to show understanding of a math concept.

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

To learn to do something very well.

pressed firmly together. To affect someone or something greatly.

engaging in speech. action of talking. To say things or ideas to someone with words.

Main idea or theme in a story, book, or film. To communicate using text.

person's attitude to life.

Having power or authority.

A successful person; one who achieved their aims.

In a normal or usual way.

Occurring immediately. precise moment of time.

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. Over, in, across an entire thing or place.

Work done to find or discover knowledge. investigate systematically.

Types of plants and animals in an specific area.

fixed or movable upright partition used to divide room, give shelter from draughts, heat, or light. Wire nets in windows or doors to keep insects out. conceal, protect, or shelter person or thing with screen.