We’re visiting Mr. Li, about _______ films people talk a lot.
32. Once he starts a job, he won’t stop ______ it’s finished.
31. An e-pal, as you have known, means a friend ______ you write e-mails.
30. He will not tell the fact ______she has gone to Beijing.
29. The film is ______ a film. It is also a good material for education.
28. The water will be further polluted unless some measures ______.