Man _____ profit, sometimes even being unaware of the harm he has done to the environment.
—It’s late. I must leave now. —OK.
It was in the museum I came across my best friend.
He was too tired and fell asleep with a book open on his knee.
They were playing in the garden they heard a scream.
He went there, some books in a bookshop and called on an old friend of his.