13. Jane _________________________ (把它归功于) her father that she has been able to finish her college education. (owe)

12. The policeman __________________ (碰巧正在) directing the traffic when the accident happened. (happen)

11. Why send your motorcycle ____________ (修理)? You‘d better not drive it any more. (repair)

20. By the end of next year, they_____________________________(把一切准备好).( ready)　 教育博客

19. Professor Smith, along with his assistants, _________________________________ (正在致力于这项工程)　day and night to meet the deadline. (work) 教育博客

18.　 He is very anxious because there are so many problems _______________________(有待解决).(remain) 教育博客

17. __________________________________(使他担心的是)is that he may not pass the exam.(what)教育博客

16. This is one of the museums that ______________________________(很值得参观)(worth)

15. __________________________________(由那个男孩领路), we got to the destination at last.(with)

14. It ____________________(肯定是)Tom that parked the car like that，as he is the only one who can drive. (be)