Here are the correct answers for each question:

17. I wanted _____ by the head of the company, but it was impossible.
- A. to see

18. Katherine _____ at Bob's house every night this week.
- D. has been eating

19. "Where did you get these old dresses?" "We _____ them in the old trunk."
- C. found

20. "What happened to the old mail carrier?" "He _____ to a new neighborhood to work."
- C. was sent

21. Somebody cleans the room every day.
- C. The room is cleaned every day.

22. They cancelled all flights because of fog.
- B. All flights were cancelled because of fog.

23. People don't use this road very often.
- A. This road is not used very often.

24. Somebody accused me of stealing money.
- C. I was accused of stealing money by somebody.

25. How do people learn languages?
- A. How are languages learned?