用所给动词的适当形式填空。 Tom is a boy of fifteen. His parents 1______(die) two years ago, and he had to make a living by himself. Now he 2______(work) as a servant at Mr. Jackson's. He works hard and Mr. Jackson is pleased with him. Mr. Jackson has fun 3______(plant) all kinds of trees. There are many kinds of precious (珍贵的) trees in his garden. The week before last Mr. Jackson 4______(bring) a few trees home, planted them in the garden himself and watered them every day. Some days later, he had to 5______(leave) for another city. Before he started, he said to Tom, '6______(take) good care of the plants when I am out. Some boys of our neighbors always want 7______ (steal) them.' '8______(not worry) about them, sir,' answered Tom.'I 9______(try) my best to watch them.' Six days passed and Mr. Jackson came back. As soon as he saw Tom, he asked,'10______ anyone ______ (come) to steal the trees?''No, sir,' said Tom.'I pulled them six days ago. Now they have been hidden (藏起来) in the house for nearly a week!'