CLEAN: Libyans eager to cast ballots in historic vote

What is the significance of the word 'Hello' in communication?

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In what contexts might you use the greeting 'Hello'?

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How does the tone of voice affect the meaning of 'Hello'?

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Can 'Hello' be considered a complete sentence? Why or why not?

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What are some alternative greetings to 'Hello' and their implications?

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