He is a very active person.

He showed his gratitude on his face.

He has difficulty expressing his emotions in words.

He said it's important to maintain the balance of yin-yang.

We should use more renewable energy.

We are using LED bulbs for energy saving.

We participated in the local cleaning activity over the weekend.

We are actively participating in local activities.

He is good at explaining that theory.

Watching the sun rise is very beautiful.