My friend is participating in a clinical trial for a new drug.

There are a thousand meters from my house to school.

He was serving the emperor diligently.

This sofa feels good.

He is serving his master diligently.

I sincerely apologize, but I cannot fulfill that request.

He was promoted rapidly due to the president's favourable regard.

God shows favourable regard to all of us.

Paying the urban planning tax is a citizen's duty.

She saw a distant mountain.