Choose the correct answers.

The following story is for questions 6 to 10.

    Once, there lived a young couple in a small village. One day, the wife made a hundred sleeping hats for her husband and asked him to sell them in the market. The husband excitedly wore one of the nice sleeping hats while walking to the market. To reach the market, he had to pass a dense wood. Being tired from the long journey, the man stopped to have a rest under one of the big trees in the wood. He put down his bag, full of hats, on the ground and went to sleep.

    He slept so soundly that he didn't realize that a lot monkeys in the trees were watching him. Soon, they climbed down the trees, took the hats, and climbed up the trees. When the man woke up and knew that the monkeys had stolen his hats, he got angry. He threw some stones at the monkeys, hoping they would return his hats. Surprisingly, the monkeys imitated what the man did. They threw some fruits at the man. The man, then, got the idea throwing his hat on the ground. The monkeys did the same, too. They threw the hats to the ground. Then the man quickly collected the hats and went away.

What did the monkeys do to the hats when the man was sleeping?