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Professor Berg was very interested in the diversity of cultures all over the world. 

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There is a wedding _________ for all the guests after the wedding ceremony.

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As a country with many mysteries and legends, Vietnam has kept various ________beliefs about daily activities.

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The                     for a new high-speed railway met with strong opposition.

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She always travels first-class regardless of                .

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He kept the tone of the letter              and businesslike. 

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She accepted the charge without                     .