It is evident that he did it.

He gave the exact number of participants.

I have an examination tomorrow.

I need to examine the evidence before making a decision.

The examiner asked me a series of questions during the interview.

She demonstrated excellence in her work.

In a buyers market, there is an excess of goods and prices are lowered, making it advantageous for buyers.

I need to exchange this shirt for a smaller size.

The exchange rate between the two currencies is constantly fluctuating.

During the festive celebration, the children excitedly lit the fire crackers, filling the night sky with colorful sparks.