My younger brother loves motocross and works hard at practice every weekend.

It will take time to find the answer to this difficult question.

In math class, we learned about finding the area of a circle.

He used the radius to find the area of the circle.

He was standing at the summit of the mountain.

We conducted a detailed investigation into the issue.

He is working at that ministry and agency.

The color scheme of this room represents perfect harmony.

My new notebook is very convenient.

The music was within audible range.