Alexander Graham Bell lived from the years 1847 - 1922. He is best remembered for ____ (1) the telephone. Before he invented the telephone, he taught ____ (2) to deaf students and was a professor at Boston University. Bell’s interest in speech led him to experiment with transmitting speech _____ (3). He thought that sound-wave vibrations could be converted into electric currents at one end of a wire. Then, current could be reconverted into identical sound waves on the receiving end of the wire. While ______ (4) this experiment, he heard the sound of a plucked reed coming through the end of the line where he was working. The sounds. The transmitting of words would come later with more experimenting. On March 7, 1876, the U.S Patent Office issued a ______ (7) to Bell for his idea of the telephone. Three days later, while Bell and Watson were working on the invention, Watson ______ (8) the words, “Mr. Watson, come here. I want you! These words were coming _____ (9) the receiving apparatus invented by Bell. The work of Bell and Watson paved the way for telephone serviceiving apparatus invented by Bell. The work of Bell and Watson paved the way for telephone service in the United States. On July 9, 1877, the first telephone company, Bell Telephone Company, was ______ (10) for business. 1, A. inventing B. producing C. introducing D. finding 2, A. spoken B. speak C. speech D. speaking 3, A. electric B. electronically C. electronic D. electrically 4, A. finding about B. dreaming about C. thinking about D. working on 5, A. was working B. worked C. had worked D. being worked 6, A. produced B. heard C. discovered D. invented 7, A. newspaper B. paper C. degree D. patent 8, A. noticed B. through C. read D. heard 9, A. across B. through C. by D. with 10, A. opened B. closed C. public D. banned