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------- the initial prototype and the final model of the keyboard featured customizable media keys

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Most people think of computers as very modern inventions, products of our new technological age. But actually the idea for a computer had been worked out over two centuries ago by a man (39) _____ Charles Babbage. Babbage was bom in 1791 and grew up to be a brilliant mathematician. He drew up plans for several calculating machines which he called "engines". But despite the fact that he (40)_____building some of these, he never finished any of them. Over the years, people have argued (41)_____his machines would ever work. Recently, however, the Science Museum in London has finished building(42)_____engine based on one of Babbage's designs. (43)_____has taken six years to complete and more than four thousand parts have been specially made. Whether it works or not, the machine will be on show at a special exhibition in the Science Museum to remind people of Babbage's work

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Would you please pick _______ that book from off the floor?

In the North of Vietnam, people usually buy _____________ blossoms on New year.

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It is ____ that all the students in class 1OA choose to do a project on ‘Helping the needy’

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Jack ________ yet, otherwise he would have telephoned me

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There are ______________ buildings in this city. There aren’t enough parks for children

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If you want to improve your immune system, do the recommended amount of moderate _______

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He was ill for six weeks and fell _________ with his schoolwork

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I insist on ____ this small present as a token of my appreciation

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"Curiosity is one of permanent and certain characteristics of a vigorous intellect." _ Samuel Johnson

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When finding a new house, parents should _____ all the conditions for their children’s education and entertainment

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I'm sorry for all the interruptions—please, carry ___________ with your story

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When did the short skirt first ....... ?

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It was sparsely furnished, for Anne had only just ........... her inheritance, but it was newly decorated and clean

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As he made no ______ to our quarrel, I assumed he had forgiven me

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 I’m not surprised Margaret's ill. With all the voluntary work she's __________,she’s really been doing too much

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When do you .... for Easter?

….name is Marry.

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Stock analysts on Wall Street wrongly ------- that Midwest Grains would dominate the industry this year

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He dropped ________________ the race after two laps