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She worked on computer 3 hou's yesterday. задать вопрос when

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How long did she work on her computer?

Сочинение на тему:   " люди  " "the famous people " the importance of alexander graham bell on today’s society is visible, or rather audible, every day and everywhere. first and foremost, alexander graham bell was a prolific teacher of the deaf. this is what he considered to be his true life’s work, but only one of the many important things he did. his own definition of an inventor, “a man who looks upon the world and is not contented with things as they are. he wants to improve whatever he sees, he wants to benefit the world.” suits him well. everything that he did had an impact on someone.  alexander graham bell was born in edinburgh, scotland, to a family of speech educators. he became deeply interested in the study of sound and the mechanics of speech, inspired in part by the acoustic experiments of german physicist hermann von helmholtz, which gave bell the idea of telegraphing speech. his life did seem to demonstrate the oneness of the world. he was cheered at exhibitions, applauded at scientific meetings, and sought out by reporters. he and his wife united two numerous and close-knit families. children, especially those of his own extended family, loved him. his marriage was a model of devotion throughout its forty-five years. he was much more than one of the most influential inventors of modern history, he was a great husband, a mentor for youth, a model citizen, and an excellent teacher. 

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