Us vu cas tcss ui uyusti sulal puwe ulical uutiuities.31. the air becomes polluted because of cars, power stations, 32. acid rain is not only rain, but snow. sleet, fog too. 33. nothing or nobody helps make industry less harmful to the environment.34. acid rain is harmless. 35. because of acid rain lakes, rives, seas become toxic.​

х учеников в 5 б

(х+4) учеников в 5 а

в двух классах 62 ученика

х+(х+4)=62

2х+4=62

2х=62-4

2х=58

х=58: 2

х=29   учеников в 5 б классе

29+4=33 ученика в 5 а классе 

 

5а класс - х

5б класс х-4.

всего 62, т.е. х+х-4=62;

2х=66;

х=33(ученика)-в 5а классе.

х-4, т.е. 33-4=29(учеников) - в 5б классе.

Yes, I have. My grandmother lives there. Actually, you can do a lot of things on the countryside. Whatever your soul wants. Camping, Cycling, Picnics, Skiing (If it's on the mountain), etc. Sometimes you aren't able to visit some famous restaurants, cafes, and malls in the village. Advantages of the village is especially fresh air. No cars, No planes, No factories. And in village you actually can plant vegetables, fruits, have a farm with cows, you can have a rancho with horses, etc. Disadvantages of the village is that you can't find any shops near you, or even malls. Usually, you have to go to other, bigger village, where actually is a big mall, or just a supermarket. I feel safe, careless, and happy in village. I can watch the stars at night, or just run on the green field with flowers by the sunshine. Some people rather to live in villages, but some don't. I'd like to live in a village.

1) have you already had your dinner? yes, i have. i have already had dinner. 2) how many classes, seminars and lectures have you had today? i have had six classes today. i  haven't had any lectures or seminars. 3) what interesting tv programs have you seen this week? i haven't seen any interesting programs this week. 4) to what museums, cinemas, theatres or concert halls have you been this month? i have been to several art  galleries this month. 5) who has passed the exams with excellent marks in your group? nobody has passed  the exams with excellent marks in my group. 6) where have you just come back from? i've just come back from the college. 7) you have been late for the first lecture, haven’t you? yes, i have. i have been late for the first lecture.