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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

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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

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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

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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

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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

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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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