3
1There are too many cars in the streets of big cities.
2 In some African countries kids don`t have enough textbooks.
3 There`s much pollution in industrial countries.
4 I haven`t got much homework to do this weekend.
5 Have you got enough money to buy the book?
4
1 Everybody must be here by 8 o`clock.
2 You mustn`t cross the street when the traffic light ghanges.
3 My dentist says I shouldn`t eat too many sweets.
4 You look tired, I think you should have a rest.
5 All exits must be kept clear in case of fire.