The story of the time of creation is mysterious and interesting.

What is the half-life of this substance?

A new school term is starting.

His dog is currently in its sexually active period.

During the dry season, it is important to conserve water.

He experienced many difficulties during his adolescent.

His attendance is irregular.

His irregular attendance is disrupting the team's schedule.

The project is making favorable progress.

The project is making favorable progress.