75.As a student, being _______________(准时的)for class is essential.

74.The injured boy is in danger because he has _______________ (流血)too much.

73. You have to be highly _________________(好竞争的)to do well in sport nowadays.

72. I think that his suggestion _________________(值得)considering.

根据所给汉语，写出下列英语句子空白处所缺单词的正确形式。(每空一词)

71. The __________________(普及)of the computer has changed our life greatly.