56．--Look! You have ________（穿）a hole in your jeans．

--Aha! It's in fashion．Don't you know?

B．根据句子意思，用括号中所给单词的适当形式填空。

55．After he was chosen from hundreds of young boys，Wang Fei began to train to be an airline ________（飞行员）．

54．Old Brown had to take a rest after he walked on the ________（第九）floor．

53．Parents shouldn't be ________（不耐烦的）with their children though they are busy and tired sometimes．

52．It is ________（广泛地）known that English is one of the most important languages in the world．

51．My battery of the camera doesn't work．Can I ________（借）yours?