My personal thought is that everyone should be treated equally.

He can think about things with common sense.

He is immersed in miscellaneous studies.

He embraced her.

If you rephrase that complex theory in simpler terms, it's just common sense.

He daringly accepted the challenge.

Caseous necrosis was found in his lungs.

The police are conducting an investigation at the scene.

The landlady showed us to our room.

My younger brother is good at addition in arithmetic.