16、With the economy of China has been developing very fast, more

76.______

and more families are now rich enough to have their own cars.

Cars do benefit the families as well the society in many ways.

77. _____

With a car, it is convenient for the family members to travel

to and from work. They can also drive to the countryside on the

78.______

weekends. At the same time, the development of motor industry

79.______

will sure give a push to many other related industries,  

80.______

it is obviously beneficial to the social economy.

81.______

In the other hand, the boom of private cars is also causing traffic

82.______

and environmental problems. Waste gas from cars are causing

83. _____

serious pollution to the air, which do great harm to people’s health.

84. _____

With an increase number of cars on the roads, the traffic has become

85.______

very heavy.