The cruel man beat his wife.
The cruel woman threw the boy into a dark room.
His cruel master nearly beat him to death.
The cruel master beat his slaves mercilessly with a whip.
It was a cruel lesson.
Fate dealt him a cruel blow.
He was criticized for his cruel acts.
The cruel war caused great disasters to the people.
What a cruel sight it was!
“How dare you say I'm unfair?”said Mr. White in a cruel voice.
Anyone who likes watching people suffer is cruel.
How could he be so cruel?
Tigers are cruel by nature.
The disappointment was cruel.
The summers there are really cruel.
S+be+～+ prep .-phrase
They were very cruel to their prisoners of war.
A mother who is cruel to her child is unnatural.
Don't be cruel to animals.
It is/was+～+(of sb) to- v
It was cruel of her to kick her sick mother out.
It was cruel of him to say that.
It was cruel of them to make the donkey carry such a heavy load.
It was cruel of Tom to tease that little boy.
It is cruel to hit a dog with a stick.