根据句子意思和所给首字母或中文提示，在标有题号的横线上写出一个英语单词的完整、正确形式，使句意通顺。
【小题1】He has developed his ffluency in English from his childhood and now he can municate freely with natives from English-speaking countries.
【小题2】As most of the population in China are farmers, aagriculture plays an important part.
【小题3】In order to reduce the toll of death and disease from tobacco, they have rrestricted its production.
【小题4】This is an eextremely tough task, but I think you can fulfill it.
【小题5】At the news of Qian Xuesheng's death, the whole nnation was in deep sorrow.
【小题6】It was their wisdom and courage (勇气) that helped them win over the hardship.
【小题7】They are hardworking and therefore (因此) they have done a good job.
【小题8】Gradually （逐渐地）, the children began to understand.
【小题9】Tom oowed (欠) me 500 Yuan.
【小题10】I persuaded my mother to buy me a/an portable (便携的，手提的) puter.
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解析：
【小题1】句意：他从童年就培养英语的流利性，现在可以自由的和说英语的国家人交流。名词“流利”：fluency
【小题2】句意：中国大部分人口都是农民，农业起着重要的作用。名词“农业”： agriculture
【小题3】句意：为了减少烟草引起的死亡和疾病，他们限制了烟草生产。动词“限制”和have连用用过去分词restricted
【小题4】句意：这是非常艰巨的任务，但我想我可以完成。副词：非常：extremely
【小题5】句意：在听到钱学森去世的消息的时候，全国人们都陷入深深的悲痛。名词“国家”：nation
【小题6】句意：是他们的智慧和勇气让他们战胜了困难。名词：勇气：courage
【小题7】句意：他们很勤奋，因此做的很好。副词：因此： therefore
【小题8】句意：逐渐的，他们就懂了。副词：逐渐地：Gradually
【小题9】句意：汤姆欠我500块钱。动词：欠：owed因为是具体的事情，用一般过去式
【小题10】句意：我说服妈妈给我买个便携电脑。形容词：便携的：portable