He is a distinguished person in his field.

The debtor has an obligation to repay his debt.

My grandfather is already sixty years old.

When summer vacation comes, the children enjoy bug catching every day.

When summer vacation comes, children become engrossed in insect collecting.

When summer vacation comes, children enjoy collecting insects in the park.

I steam and eat vegetables every morning.

I learned about anhydrides in chemistry class.

He was working as a body double for a famous actor.

He is a hard-working laborer.