题目内容：

完形填空。

阅读下面短文，从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。

  Edison began to make a talking machine in 1877. At first he_____paper with holes to make a sound. He worked for months on this____,at last he____how to record a person’s voice. But the first machine was very____ and the voice was only one type and not clear enough. Then he____another long time on it. He____some parts and he put some new ___on the talking machine. This time the voice could be played（被播放)and the voice was also very____.After the Second World War others used his____to record music and songs. Then came the tape recorder. it is much easier to record voice. How___Edison was!

1.A. followedB. drew   C. used

2.A. ideaB.name   C paper

3.A. friedB. found  C. flew

4.A .simple B. complicated  C. hard

5.A. tookB spent   C. paid

6.A. changed B wrote   C. made

7.A. onesB. records C. parts

8.A. clean   B .tidy C. clear

9.A. machine B. method C .memory

10.A. great  B. beautifulC. Stupid