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英语填空题用下列所给词语的适当形式填空clean develop introduce invent produce sp

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英语填空题
用下列所给词语的适当形式填空
clean develop introduce invent produce spread use write
From about 500 BC,pens _________ for writing.The feathers of large birds _________ and dried.The point of each feather was sharpened.Then people used them to write with ink.Many famous works,such as Shakespeare's,__________ with these pens.Then,in the 18th century,a pen with a steel writing point __________ .Only a few words could __________ ,however,before the writer had to fill the pen with ink again.Many years later,the fountain pen __________ from these early pens.In1950,a European invented the ballpoint pen.The popularity of writing ________ quickly with the ___________ of the ballpoint pen.Even today,ballpoint pens are much less expensive,compared with fountain pens.
众位想怎么答就怎么答,不过最好给个理由,
英语填空题用下列所给词语的适当形式填空clean develop introduce invent produce sp
were used
were cleaned
were writen
was invented
be produced
introduced
spreaded
development
如果考试我就这样做了,感觉真的很难,有几个是蒙的~哈哈不要介意哈,仅供参考o(∩_∩)o...