阅读短文，用所给动词的适当形式填空。

      Policemen 1            (call) by a shop early on Christmas morning. When they 2            (arrive) they

found two thieves 3            (keep) in a lift with a heavy box of money. The two men were in their twenties.

They 4           (break) into an office in the shop and took the money box and ran into the lift. They did not

see the sign on the door 5            (say) that it carries no more than two people.

     "They were kept between the floors because they took a heavy box," the police officer said, "they 6           

 (keep) there for six hours, 7            (sit) on what they wished 8            (be) their Christmas

presents. It was a very special moment when the policemen opened the door and they walked out 9            

(hold) their arms. They said they 10            (never be) so pleased to see policemen. The policemen said they

were pleased to see them too."