阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
One day, a train was approaching the small town of Cheekyville. On the train was a 1 guy with a big suitcase. He was called William Warbler and he looked very 2 indeed. But what made him most unusual was the fact that whenever he needed to 3 he did it by singing opera. It didn’t matter to William whether it was simply a matter of answering a brief greeting, like “good day”. He would 4 “Goood dayyy to youuuuuu..... toooooo!”
No one could get a normal, 5 word out of him. And, as no one knew how he made his living and he lived quite simply, always wearing the same old second-hand suit — they often 6 him.
They 7 his singing, calling him “crazy”. William had been in Cheekyville for some years, when, one day, a rumor(谣言) 8 round the town: William had 9 a role in a very important opera in the nation’s capital, and there were posters everywhere 10 the event was a great 11 . And to everyone’s surprise in Cheekyville---when William was being 12 by reporters, he answered their questions by speaking 13 singing. And he did it with good 14 and with a clear and pleasant voice.
From that day, William gave up singing 15 . Now he did only during his stage appearances and world tours. Some people suspected 16 he had changed, but others still had no idea, and continued believing him to be somewhat mad. They wouldn’t have thought so 17 they had seen what William kept in his big suitcase. It was a large stone with a hand-carved message on it. It said “Practice every second, for you never know when your 18 will come.”
Little did people know that rather 19 he got the role in the opera because the 20 had heard William singing while out buying a newspaper.
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