单词填空（共15小题；每小题1分，满分15分）
71. I lost my _______ (平衡) and fell on my face.
72. You must _________ (道歉) to your sister for being so rude.
73. The robber was _________ (观察)entering the bank.
74. On the _________ (相反)，the job was fascinating. I love it.
75. What she said _________ (使信服)me that I was mistaken.
76. He is not _________ (可能) to succeed.
77. His arms _________ (摇摆) as he walked.
78. It was _________ (考虑周到) of you not to play the piano while I was having a sleep.
79. Some of the violent _________ (场面) are very frightening.
80. Not much _________ (解释) will be needed.
81. A postman is a man _________ (递送) letters and parcels.
82. I prefer to live in a house _________ (包围) with trees and flowers.
83. The criminal escaped over the _________ (国界).
84. She has _________ (主演) in a variety of films.
85. I don’t go along with her _________ (宗教上的) beliefs?