29. Edison was one of the greatest __________ in the world. (invent)

28. He was a famous writer in the __________ century. (twenty)

27. Have you found your _________ car? (lose)

26. I want to know how to eat and drink __________. (health)

25. Jim went to school in a hurry this morning without ________ breakfast. (eat)

24. My classmate is better than me at __________. (sing)

23. Which do you think is more difficult, written English or _________ English? (speak)

22. Please keep the window ______because the wind is blowing hard. (close)

21. I really enjoy _________ to the light music. (listen)

20. Physics is ___________. Are you __________ in it? (interest)