The members of the club wouldn't run a _____ in entrusting(委托) the organization to an unreliable person.
47. China’s winning the host of the Olympic was an exciting moment, ______ all Chinese will never forget.
46. He hesitated about the brake, otherwise the accident ______.
45. The population of China ______ to many times what it was in 1949, and most of its population ______ farmers.
44. Please tell me ______ you would like to have your coffee --- black or white?
43. ______ he was absent, I was expected to take his place greatly surprised me, for I didn’t have much experience.