63. I _____________ 　_____________ an old friend I hadn’t seen for years.(我碰巧遇见了多年未见的老朋友。)

62. No one knows __________ 　____________ what happened to him. (肯定没人知道他发生了何事。)

61. Everybody in our class is required to p______________ in the spring outing.

60. People of that remote village are mainly o______________ with agriculture.

59. Only members of the club have the p______________ of using the sports facilities.

58. A baby is too young to be a_______________ of the dangers around it.

57. You’d better a_____________ yourself to the life here as soon as possible.

　　 根据单词的首字母或括号里面汉语的意思填上相应的单词和短语

56. Doing morning exercises surely has some b_____________ effects on our health.