My grandfather used to till his privately-owned rice field.

Using the private railway makes commuting very convenient.

We respect Japanese culture.

We are going on a trip tomorrow.

He holds a personal grudge against me.

She was diagnosed with Addison's disease.

My grandmother is suffering from Alzheimer's disease.

He is suffering from alopecia.

How does this pathogen infect humans?

My sick friend is fighting his illness with cheerfulness every day.