No one was left in the museum now, and John was walking round to see if everything was all right. Suddenly he saw a beautiful painting lying on the floor. John picked it up and gave it to the director of the museum.
The director called several museums to check and see if it was a stolen painting, but no one claimed(认领) it. So the director decided to hang it in the museum. All the experts came to look at the painting. Each one said it was beautiful and had very deep meaning. The director was proud to have such a painting in his museum and congratulated John on his discovery.
Some weeks later a woman and her little son came to the museum. While they were looking at the new painting, the little boy began to cry. The director went over and asked him.
“Why are you crying?”
The child pointed to the painting and said, “That’s my painting on the wall and I want it back.”
“Yes,” said his mother. “He left it on the floor a few weeks ago. If you look carefully, you can see his name on the painting.”
John was perhaps           .

A．a painter

B．an expert on painting

C．a visitor to the museum

D．a man working in the museum

John found the painting           .

A．before the museum opened

B．during his visit to the museum

C．after the museum was closed

D．while he was enjoying his walk

After the director heard what the woman and the boy said, he must be very       .

A．angry

B．surprised

C．afraid

D．proud

All the experts thought the painting good because          .

A．it was a stolen famous painting

B．none of them looked carefully enough

C．it was drawn by a famous painter though he was a child

D．they found it really beautiful and it had very deep meaning