The traffic slowed down because of the heavy snow in Yushu county, presenting a new __________ to the recovery from the earthquake.
68. Yesterday my friend and I went to the supermarket nearby. We found that there were _______ nothing worth buying.
67. The young man _____ forgot that his girl friend’s birthday was drawing _____ .
65. After having failed many times, the young man refused to try it .
64. Why did you ask him for help instead of Jim? He is_______helpful than Jim.
62. Instead of answering, she merely smiled. Which of the following can best explain the meaning of the underlined word?