На 100% не уверена1. I know that he will come soon. 2. I knew that he would come soon. 3. I think she will sleep at this time. 4. I thought that she would sleep at this time. 5. She thinks she will do all the work by five o'clock. 6. She thought she would do all the work by five o'clock. 7. She was afraid that her friend wouldn't come. 8. They wrote that they would be coming soon. 9. I was sure that I would meet him at the station. 10. I think that my father will write us a letter soon, 11. Did they tell you that in December we will write a test paper? 12. He realized that he would never forget her. 13. I believe that they will remember us. 14. He says that he knows this man. 15. She was afraid that her son would sit in front of the TV all evening. 16. I was sure that by ten o'clock he would already learn the poem. 17. I knew that by nine o'clock my mother was already preparing dinner, and at six o'clock the whole family would be sitting at the table. I was afraid that I would come too late.