根据下列各句空白之后的汉语提示词及首字母提示，在答题卡指定区域的横线上写出对应单词的正确形式，每空只写一词。(注意：请写出完整的单词)
【小题1】Michael Jackson made a great contribution (贡献) to the world’s popular music.
【小题2】The majority of the citizens (市民)are against the project.
【小题3】These ancient (古代的) buildings must be preserved.
【小题4】She dropped studies because of poverty (贫穷).
【小题5】What do you thing is the most important invention (发明) in the 20th century?
【小题6】 The two leaders exchanged (交换) their ideas about this problem at the meeting held last month.
【小题7】His heart is beatingviolently (猛烈地) while waiting for the result...
【小题8】People are plaining (抱怨)about high prices.
【小题9】Why do you want to resign (辞职)your position as secretary?
【小题10】The world's resources are limited, so the reusable resourcesshould berecycled (循环利用).
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解析：
【小题1】contribution 名词贡献：contribution
【小题2】 citizens 名词市民:citizen.根据后面的are说明主语是复数形式。
【小题3】ancient 形容词古代的：ancient
【小题4】poverty 名词贫穷：poverty注意其形容词形式是poor
【小题5】invention 名词发明：invention
【小题6】exchanged 动词交换：exchange.根据后面的last month说明使用过去时。
【小题7】 violently 副词猛烈地：violently修饰动词beat做状语
【小题8】plaining 动词抱怨：plain。根据句意说明使用现在进行时。
【小题9】 resign 动词辞职：resign
【小题10】recycled 动词循环使用：recycle。本句是其被动语态，故使用过去分词。
考点:考查单词的识记。