He is an expert in optics and has a deep knowledge of laser technology.

His favorite food is sushi.

He was ready to attack the enemy.

His attack was very powerful.

I am doing volunteer work to contribute to the community.

My mobile phone has broken.

He made delicious food using sorghum.

He resisted his parents' orders.

He went to the hospital complaining of testicular pain.

He is devising a plan for a new business.