Fill in: reverse, provide, prevent, contain, keep, become, after; 1. The planet Mars was named a Roman god.
2. Wearing sunscreenthe development of skin cancer.
3. The vitamin E in avacados helps skin firm and smooth.
4. If an anti-aging gene existed, scientists would the aging process.
5. Lack of exercise weakens your muscles and they less efficient.
6. Scientists have tried to an explanation for how the human brain works for centuries.
7. The pancreas a substance that helps break down food.

1. Nina celebrated her birthday yesterday. Her room looked beautiful, there were many flowers in it. When I came in, somebody was playing the piano, two or three pairs were dancing. 2. Listen! Somebody is playing the piano. 3. I  like music very much. 4. When I  looked out of the window, it was raining heavily and people were hurrying along the streets. 5. What  were you doing at seven o'clock yesterday? — I was having supper. 6. When I  came home yesterday, I  saw that all my family was sitting round the table. Father was reading a letter from my uncle who  lives in Paris. 7. Where were you  yesterday? — I was at home the whole day. — How strange. I rang you up at two o'clock, but nobody  answered. — Oh, I was in the garden. I was reading your book and did not hear the telephone. 8. What wereyou  doing at five o'clock yesterday? — I was working in the library. — I was there, too, but I did not  see you. 9. Yesterday I was working at my English from five till seven. 10. It was raining the whole day yesterday. 11. Where is your sister  now? — She is in her room. She is doing her homework.

3. Выберите лучший продолжения после каждого предложения (активный или пассивный).1. Он живет в небольшом доме.) Кто-то построил его около сорока лет назад.б) Он был построен около сорока лет назад.2. Английский стоит обучение.) Люди говорят его во многих странах.б) говорится во многих странах.3. Он получил спортивный автомобиль, но он не нравится.) Так он снова продал его.б) Так он был продан еще раз.4. Мой племянник художника.) Он просто нарисовал другую картину.б) Другая картина только что окрашены.5. Новый фильм Virginia Мейер чудесно.) Они показывают его на нашем местном кинотеатре.б) в настоящее время показано на нашем местном кинотеатре.