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TASK 4 ŁAN6UA6E AT WORK.

Readthesentencesandchoosetheanswera,b,cord whichbest fitsthespace.

Biodiesel is 1._from vegetable oil and yellowgrease. The production process 2_oils and fat$ mto t

Sometimes these Chemicals are referred to as fatty acid methyl esters, and the process 3 . _ to as trant hundred pounds of oil or fat 4. _ w/th 10 pounds ofshort-chain alcohol (usually methanol) in thi prasa

100 pounds of biodiesel and 10 pounds ofglycerin. Although glycerin is produced 5._a coproduct m i

used in pharmaceuticals and cosmetics.

the customers, most distributors 9._to inform them about the delivery. Nowadays, 10._, it is madę wi the order.
1. a) produced	b) product	c) products	d) producted
2. a)converted	b) converts	cj has converted	d) was converting
3. a) was referred	b) has been referred	c) is referred	d) were referred
4. a) are reacted	b) is reacted	c) was reacted	d) reacted
5. a) but	b) like	c) however	d) as
6. a) even though	b) despite the fact	c) although	d) however
7. a) were focusing	b) was focusing	c) had been focusing	d) had focused
8. a) on	b) from	c) by	d) for
9. a) has phoned	b) had phoned	c) phoned	d) have phoned
lO.a) even	b) but	c) although	d) however

oikineSS COMMUNICATION.

"■nnriate responses in B. There is one extra phrase. Write your answers in the

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Homemade biodiesel is not recommended, 6._that the process is relatively simple. Diesel engmes *re tiptwtł, and

worth risking the damage or minor operational problems from fuel. Several years ago research 1 . on óevebpmg aty* *i biodiesel feedstock, because it was expected to produce morę fuel than vegetable oil. Biodiesel is usually distrtbuted from d point of production to retail fueling stations 8. __ truck, train or barge. Years ago, before B 20 or BIGO biodtesel was

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