81.  So in this new semester I must learn English well.

82.  To reach this goal, I must try my best.

83.  The third but not zhe last, except completes the work which every day teacher arranges, but must make some other practices, moreover the work must be clean, the handwriting must be neat, pay attention to cultivating a sense of language.

84.  If we want to travel nearby , a car must be a good tool .

85.  Universities are just like paradises compared with the society which their must enter in the future.

86.  Second modern universities must play an important role in society life.

87.  Above all, I must have bravery to open my mouth and speak loudly.

88.  I must take these procedures to action right now.

89.  But cooking must have not become common practice before man learned how to make and control fire.

90.  Finally, that is not enough, there must be an effect method.