PG. 395 N. 1

1. Beer is never dranks by Michael.

2. Our summer holidays has just been booked by we.

3. Some text were sent by Rachel two days ago.

4. When I arrived, the mirror had been broken by he.

5. vegetables are grew by farmers.

6. don't worry. He will be call by me straight away!

7. A ghost has just been seen by somebody in the castle.

8. More than 30 plays were wrote by Shakespeare.

PG. 395 N. 2

For the first step, natural ingredients such as flowers, fruit and wood are harvested from around the world. Alcohol, petrochemicals and other chemical substances are also used in the manufacture of perfumes. Not every plant contains essential oils; oils aren't produced naturally by, for example, lily of the valley flowers.

In the next stop, the oil is extracted. This is did immediately after picking. Solvent extraction is a common method. To extract oils from roses, layers of petals are placed on a methal-layered drum. The flowers are then immersed in a solvent. The result of this process is a waxy material that contains the oil, which is then washed in ethyl alcohol . The oil is dissolved in the alcohol and rises. Other extraction methods include steam distillation, enfleurage and maceration. A huge number of plants are needed to get a small amount of essential oil. Approximately 200,000 rose flowers, that is 400 kilograms of flowers are required to make 600 grams of essentual oil.

Once the essential oil is ready, it is blended togheter according to a certain formula and then it is mixed with alcohol. It may take as 800 different ingredients and several years to develop the special formula for a scent. In the last step of the process, the perfume is aged for a several months or even years after it is blended.

PG.395 N. 3

• collection: there are various tecniques: the traditional tecniques, mechanical methods and the manual collection

• transport and weighing: then olives are collected and this are carried to oil mill

• wash: subsequently the olives are defolieted and washed

• milling: the milling is first very phase of oils exctraction. There are two modality: the first is a pressing and the second modality is the traditional milling

• exctraction

• separation: the latest phase of oils prodution is a separation of water from oil.

PG. 395 N. 4

1. we got there late and the birthday cake is already served

2. is there anybody here who knowns when the Towe of London builded?

3. Some of these paintings are lended by a private collector

4. if it stops snowing tomorrow, the roads are cleared

5. the ticket that won the first prize in the lottery is bought last week near Rome

6. yesterday the alarm of a car that is parked near ours rang for more than two hours

PG. 395 N. 5

1. the car isn't washed by David every Saturday / is the car washed by David every Saturday?

2. The film hasn't been seen by lots of teenagers / has the film been seen by lots of teenager?

3. The children weren't helped by an elderly lady / were the children helped by an alderly lady?

4. That bridge hadn't been built just the year before / had the bridge been built just the year before?

5. A ghost hasn't been seen here / has a ghost been seen here ?

6. The meeting won't be put of / will the meeting be put of ?