71. Most streets/ roads/ our city/ narrow/ in bad conditions.

  => Most streets and roads in our city are narrow and in bad conditions.

72. Many people/ not strictly follow/ traffic laws/ when using the roads.

  => Many people do not strictly follow the traffic laws when using the roads. 

73. For example/ they/ cross/ sheet/ wrong places/ ride/ motorbikes/ wrong direction.

  => For example, they cross the sheet at wrong places and ride motorbikes in wrong direction.

74. Many street vendors/ occupy/ pavement/ display/ goods/ sale/ pedestrians/ walk/ in the road.

  => Many street vendors occupy the pavement to display their goods and sales to pedestrians walking in the road.

75. The number of trucks/ our city/ very big/ so/ they/ interfere/ traffic flow.

  => The number of trucks in our city are very big so they interfere with traffic flow.

76. Construction/ houses and buildings/ not carefully planned/ so/ they/ occupy/ surface of the roads.

  => Construction of houses and buildings are not carefully planned so they occupy the surface of the roads.

       To solve the traffic problems in our city, we should do many things.

77. All streets/ be widened/ and traffic lines/ more logical.

 => All streets should be widened and traffic lines can be more logical.

78. We/ encourage/ people/ use public transport/ theft personal vehicles.

  => We should encourage people to use public transport instead of theft personal vehicles.

79. Heavy penalties/ use/ for/ careless/ dangerous drivers. People/ be educated/ traffic regulations/ at the same time.

  => Heavy penalties should be used for careless and dangerous drivers. People should be educated about traffic regulations at the same time.

80. In short/1 hope/ traffic problems/ our city/ be solved/ so that/ we/ feel/ comfortable/ when/ use the road.

  => In short, I hope traffic problems in our city will be solved so that we will feel comfortable when using the road.