1. complete the sentences with the correct prepositions. when my parents are busy, i usually look my little sister. my friends and i are really looking our summer camp! if you don’t know the word, you should look it in the dictionary. what are you doing? – i’m looking my keys.

Впервом for,во втором in в третьим word или one в четвёртом for

1)for 2)at 3)meant 4)for

В1948 году изобретению появилась возможность сменить ими вакуумные лампы. имел большое значение для  разработки компьютеров. потенциальное преимущество перед вакуумными лампами было почти таким же,как и у вакуумных ламп перед реле. может переключать потоки энергии так же,как и вакуумные лампы,используемые в компьютере,но потребляет намного меньше энергии и значительно меньше по размеру. гораздо дешевле и более надёжны. они более крепки механически,имеют почти неисчерпаемый срок действия и может выполнять некоторые действия качественнее,чем электронные лампы. изготавливались из цельного кристаллического материала -- . вместе с пришла и возможность конструирования более сложных и быстрых компьютеров. 

1. here are some books by english writers. take any book you like. 2. there are no boys in the garden because they are at school. 3. i can see something on the snow, but i don't know what it is. 4. are there any desks in the classroom? - yes, there are many. 5. there are some books on this desk, but there are no exercise-books. 2. заполните пропуски, вставив одно из слов, данных в скобках. 1. 1 didn't see anybody in the street when i went out (anybody, nobody). 2. we did not play any games in the yard because it was raining all day long (no, any). 3. there is nobody at home (anybody, nobody). 4. how much did you pay for these boots? - i didn't pay anything (nothing, anything). they are a present from my grandmother. 3 . вставьте as as, so as или than. 1. our house is not so/as big as yours. 2. the new cinema in our district is much bigger than the old one. 3. we are as proud of our district as you are of yours. 4. the house i live in is as old as the one my sister lives in. 4. переведите на язык. old, older, the oldest, the eldest, my elder brother, мой старый друг, further, the furthest, the longest, shorter, happy,happier ,the happiest, the best, the darkest. 6. вставьте артикль, где необходимо. 1. this is a  tree. the tree is green. 2. i can see three - boys. the boys are playing. 3. i have a bicycle. the bicycle is black. my - friend has no - bicycle. 4. our - room is large. 5. we wrote a dictation yesterday. the dictation was long. 6. she has two - daughters and one - son. her - son is a pupil. 7. my - brother's - friend has no - dog. 8. this - pencil is broken. give me that -pencil, please. 9. she has a ball. the ball is - big. 10. i got a letter from my - friend yesterday. the letter was interesting.