81.  Being in love wastes a lot of time, money and energy, so university students' study time reduces.

82.  Having dinner together, watching the movie and doing some other romantic things all take much time, which cause the students have to reduce their learning time.

83.  And the love will reduce the time for course .

84.  What's more, riding a bicycle is a good way to reduce the air pollution, which can be of great help to protect our environment.

85.  Having analyzing the current situation in big cities and successful examples in other countries, they strongly suggest that people reduce using private cars in the centre of the cities and the transportation system should be modified to satisfy with the development of society.

86.  The number of the students who achieve academic success is reducing, which arouse the attention of investigators.

87.  However, although there are plenty of participants, the investigators say nothing about how they come to the conclusion, which reduce the reliability of the results.

88.  Since the communications can reduce the chance of raising conflicts.

89.  If we can carry out online education, we can reduce the cost of education in a great degree.

90.  Please reduce your online time , better no more than two hours a day!