Laura has an aunt who works in London．She loves Laura so much that she invites Laura to London every summer．

Last year Laura was happy to go to London and see some famous places in London，including the British museum，National Gallery （画廊）and other great buildings．How beautiful!She fell in love with them，but one thing made her very unhappy．It's her first time to go to a big square，but when she passed the square alone，a thief（小偷）stole her wallet in her pocket．She had to walk to her aunt's home angrily．

This year Laura's aunt invited her to London again．One day，when she passed the same square with her aunt，she was more careful not to be stolen．After a while，she saw a man go close to her and put his hand in her pocket with a smile．Then he took out his hand quickly and left．She became very angry and shouted，"Stop it，or I will call the police!"To her surprise，she found her aunt and all the other people there laughing with the word "Congratulations（祝贺）"！In fact，the man was not a thief．Instead，he put ten pounds in her pocket．It was an interesting game．The organizers（组织者）wanted to correct the bad impression（印象）of the square，so they hired（雇佣）some"thieves"to do that game．

（1）Why did Laura feel unhappy during her first visit to the square？ 　　

A．Because she passed the square alone．

B．Because people laughed at her．

C．Because her wallet was stolen．

D．Because she couldn't find her aunt's home．

（2）One of the organizers may be 　　．

A．a thief

B．a policeman

C．Laura's father

D．Laura's aunt

（3）They played the game to 　　．

A．change the bad impression of the square

B．ask more people to join the game

C．give ten pounds away

D．catch the real thief

（4）What can we know from the passage？ 　　

A．On the square there were few people．

B．Laura has been to London at least twice so far．

C．The man stole ten pounds in Laura's pocket．

D．Laura didn't want to go to the square any more．