Надо выполнить задание по английскому языку

1. We never SMOKE cigarettes at any time. John always SMOKES a pipe but we PREFER cigars. 2. My wife's mother HAS BEEN LIVING with us for the last six months. 3. She IS GOING AWAY today. My wife IS HELPING her with
her packing now. 4. The boys HAVE BEEN EATING green apples all day.
Now they ARE ill, and their mother IS TALKING to the doctor on the phone.
5. The boys HAVE GONE to bed because they are ill. The doctor  HAVE prescribeD some medicine. Their mother IS GIVING them some now. 6. My brother usually VISITS his business friends two or three times a year. He
IS TRAVELLING in Germany at present. 7. She HAS READ many books on astronomy and so she really KNOWS the subject. 8.1 HAVE BEEN LISTENING to you for twenty minutes but I HAVEN'T understOOD anything.
People usually THINK first and SPEAK afterwards. 9. Peter HAS BEEN DRIVING a car for years but he HAS never driveN at night before. 10. John IS goING out).  He HAS just PUT  his coat on. 11. Peter HAS BEEN readING
in bad light and now he IS havING a headache. 12. Our train usually LEAVES at two o'clock. Father HAS BEEN traveLLING by that train every Friday for five years. 13. Look out of the window.IS IT RAINING? I hope not as I HAVE not BROUGHT a raincoat today.

There is no doubt that the invention of the car changed the world. The invention of the car offers a possible solution to the problem with transport. Also I can say that it changed the world positively but negatively, too.

The positive of the invention is that modern traffic is faster than traffic in the past. The traveling rised when the car was invented. Many products in shops that we like to buy we can get only thanks to cars, because cars make transport better. People like using their cars because they are comfortable and they can move us in a short time. The negative side of this invention is pollution. Many people suffer from different  illnesses caused by pollution and from stress made by noise from cars.

So, the invention of the car had really changed the world in both ways, positive and negative. It gave us a chance to travel with comfort but it also brought stress and illnesses in our life.