| pick，can，paint，everyone，proud，cry，son，but，leave，sudden |
No visitor was left in the museum，and John was walking around to check if everything was all right.（1）
Suddenly
Suddenly
he saw a beautiful painting lying on the floor.John （2）
picked
picked
it up and gave it to the curator（館長(zhǎng)）.
The curator called several museums to check if it was a stolen painting， （3）
but
but
no one claimed（認(rèn)領(lǐng)）it.So the curator decided to hang it.（4）
Everyone
Everyone
said it was beautiful and had a very deep meaning.The curator was （5）
proud
proud
to have such a painting in his museum and congratulated John on his discovery.
Some weeks later a woman and her（6）
son
son
came to the museum.While they were looking at that painting，the little boy began to（7）
cry
cry
.The curator went over and asked what was making him so sad.The child pointed to the （8）
painting
painting
and said，"That's my painting and I want it back. "
"Yes，"said his mother."He（9）
left
left
it on the floor a few weeks ago.If you look carefully，you can see the name on the painting." The curator（10）
couldn't
couldn't
believe his ears when he heard the words.
