Переведите на язык. укажите грамматическую конструкцию в каждом предложении (gerund – герундий, participle – причастие и conditional clause – условное придаточное предложение):
1. he picked up the letter lying on the floor.
2. reading english books every day will improve your knowledge of the language.
3. after concluding the contract the representative of the firm left moscow.
4. having fulfilled the terms of the contract, we refused to admit the claim of the firm.
5. if i were acquainted with this famous professor, i should have rung him up yesterday.

i'm looking for my book.

1)the best;

2)better;

3)more;

4)the worst;

5)many.

he helps me do homework( он мне делать уроки)                                             he is a very sleek(он гладкий)                                                                             he flat surface(он ровной поверхности)                                                                         he is with me in the room(он есть у меня в комнате)                                                   he can be of any color(он может быть любого цвета)                                                   any size(любого размера)                                                                                             with shelves and without(с полками и без)                                                                   if you do the lessons of the need chair(если делать уроки то нужен стул)                       on it can be books(на нём могут быть книжки)                                                             he shall be with each student(он должен быть у каждого ученика)

in my hometown i have a lot of eco-problems. i think the main problem is air pollution. when air is polluted it changes the climate and damages animals' and our health. when people throw litter in the river they cause the second problem - water pollution. polluted water hurts water animals. when we leave litter in the forests, nature is damaged. a lot of people don't recycle paper, they cut down trees to make new paper. when trees are broken or cut down, birds are disturbed. land, air and water are important for flowers, trees, animals and people. we must protect our planet and try to save it!