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.'