We will do our best to solve this problem.

My personal thought is that everyone should be treated equally.

He values his private life.

He was born as an illegitimate child and experienced many difficulties.

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

He holds a personal grudge against me.

Using the private railway makes commuting very convenient.

He always says 'the flowers next door are red', envying others' success.

He always thinks the grass is greener on the other side.

He thoroughly researched the history of that nation.