31. The World Expo is coming. My cousin in Shanghai _______ as a volunteer in 2010.
A. has been working B. has worked
C. works D. is going to work
30. -Why don’t you ______ to a more effective method to learn English?
-Well, I am thinking about it.
A. switch on B. switch over C. switch off D.switch through
29. Lack of social communicative abilities, Gary is going to have problems finding a job ________ he gets his A levels.
A. when B. even if C. because D. until
28. When the spaceship separated from the rocket, he suddenly got _______ feeling of soaring into _______ space because of the zero gravity.
A. the; the B. a; a C. a; / D./; a
27. All the preparations for the eco-travel _______, and we’re ready to start.
A. have been completed B. complete
C. are completing D. is completed
26. We should fight _______ our own weak points _______ a bright future.
A. against; for B. for; with C. against; against D. for; against
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