1. She stayed (to lock) in her room, (to refuse) to come downstairs. 2. He had a good practical knowledge of the language, (to work) as an interpreter for many years. 3. They went out as they had come, (to see) nobody and (to see) by no one on their way. 4. Except for the grand piano and the pianist (to sit) before it, the stage was empty. 5. He looked so beautiful and peaceful, (to sit) in that chair under the tree. 6. He looked at the scene (to shake) to the depth of his heart. 7. The boy came out of the water, all blue and (to shake) from head to foot. 8. (To arrive) at the airport where he was to change, he had to wait for three hours for the connection. 9. (To arrive) in the town about twenty years before, he had succeeded thereafter beyond his wildest expectations. 10. (To support) by her elbow, Mary listened to their talk. 11. (To support) her by his arm, he helped her out of the carriage. 12. The girl was fascinated by the dark surface of the water (to reflect) the stars. 13. The young foliage of the trees, (to reflect) in the river, looked like lace. 14. I saw the figure of an old woman (to come) towards me. 15. My brother is a soldier just (to come) back home on leave. 16. He retired (to leave) the laboratory in the hands of a talented successor. 17. He retired (to turn) the laboratory into a big research centre. 18. (To finish) their meal, they went for a stroll in the park. 19. (To look) through the paper, he gave it to the secretary to be typed. 20. The room had a musty smell as though (not to live) in for quite a time. 21. My father hates being disturbed when (to engage) in some kind of work. 22. He always keeps a diary while (to travel).