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Courage is _____ _____ _____ _____ ______（优秀品质之一）of a good soldier.

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Coffee of _____ ______（高质量）costs more than coffee of ______ _______（低质量）.

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We need to find a  ________（替代者）for Sue.

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I ________（放回）the cup carefully in the saucer.

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All the old carpets need ________（更换）.

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It is not a good idea to miss meals and _____ ______ them（改吃）snacks.

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Teachers will never be ________（代替）computers in the classroom.

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We should help _____ _____（发展）of poor countries.

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Now India is a ________（发展中）country, while America is a ________（发达的）country.

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The city has _____ _____（发展成为）the center of industry.