According to the American________，presidential elections are held every four years．

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Footsteps________ his return．

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He went back home without having________ any success．

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He________ several interesting plans．

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Honesty is an important_________ in anyone's character．

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Which________ of toothpaste do you prefer？

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In Western countries，parliament is the chief _________ of the government．

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I will________ for John to meet you at the airport．

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Millions of American soldiers fought________ in World War'Ⅱ．

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It is impolite to inquire of_________ affairs of others．

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