78. we / encourage / people / use public transport / their personal vehicles
We encourage people to use public transport instead of their personal vehicles. (Đây là cách viết phổ biến và tự nhiên nhất.)
79. police / use / heavy penalties / for / careless / dangerous drivers. People / be educated / traffic regulations / at the same time
The police use heavy penalties for careless and dangerous drivers. At the same time, people should be educated about traffic regulations. (Sử dụng dấu chấm và "At the same time" để nối hai câu.)
80. in short / I hope / we / solve / traffic problems / our city / so that / we / feel / comfortable / when / use the road
In short, I hope we can solve the traffic problems in our city so that we feel comfortable when using the roads. (Đây là cách viết đơn giản và rõ ràng nhất.)