I needed to calculate the factorial of 5 for a math problem.

He finally recovered after a long period of medical treatment.

He went to the doctor to treat his severe cold.

He was enjoying fishing on the sea.

After hearing her story, I deeply sympathised with her.

His symptoms are getting worse day by day.

The police had a warrant for him.

Orangutans are very intelligent animals.

His behavior was a singularity, and it was difficult to understand.

He handed over the management of the company to his son.