31. 阅读短文，在空白处填入一个适当的单词或括号内单词的正确形式。Once a young man was travelling by train. It was a long 31. ______ boring journey.

32. As the train turned a corner, it slowed down and then an ordinary house 32. ______ (come) into sight.

33. The house looked so different from the grey apartment buildings of the city 33. ______ everybody on the train turned to look at it.

34. The young man was also 34. ______ (interest) in the house.

35. He decided to get 35. ______ at the next station and make 36. ______ (he) way to the house.

36. The owner of the house told him that he was trying to sell the house, but no one would buy it, as the noise of the trains passing nearby made it unsuitable to live in.

37. The young man decided 37. ______ (buy) the house right then and there for $30,000.

38. He used it for advertising, as the house faced the railway bend (弯道). The train had to slow down at the bend, giving the passengers plenty of time to look at the house. The young man went to several big companies and explained the advantages of placing advertisements on the side of the house. 38. ______ (final), one company agreed to place some ads.

39. The young man 39. ______ (pay) $180,000 for three years of advertising.

40. In this world, turning disadvantages into advantages is the key to 40. ______ (succeed).