He made a small mistake during the exam.

Please explain the progress of that project in detail.

As time passed, his heart began to calm down.

Everyone, please have a good new year.

He died from overwork.

You can clearly see the eyestripe on this bird.

Peroxides play an important role in chemical reactions.

Hydrogen peroxide is often used for disinfecting wounds.

Excuse me, may I come in?

Texas is a part of America.