The diagram below shows how a biofuel called ethanol is produced.

The diagram illustrates the production process of the biofuel known as

ethanol

Use synonyms

Overall

Linking Words

, the process consists of ten stages, beginning with the growth of plants and ending with the use of

ethanol

Use synonyms

as a source of energy. In the first stage, plants and trees absorb the energy from sunlight and carbon dioxide in the environment. When they grow up, they are harvested and transported by a truck to a processing machine.

Next,

Linking Words

the raw materials experience a pre-processing stage, during which they are broken down into small components. These components are

then

Linking Words

turned into cellulose

Punctuation problem

apply

show examples

before being

further

Linking Words

processed by chemicals to derive sugars.

Subsequently

Linking Words

, microbes are added to the sugars, resulting in the production of

ethanol

Use synonyms

Ethanol

Use synonyms

is used as a fuel for cars, trucks, and planes. When these vehicles are driven, carbon dioxide is emitted into the atmosphere.

This

Linking Words

carbon dioxide is

then

Linking Words

absorbed by plants, starting another cycle.

liuyilu24

Jan 3, 2026

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Basic structure: Change the third paragraph.

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Basic structure: Change the fourth paragraph.

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Vocabulary: Replace the words ethanol with synonyms.

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Vocabulary: Rephrase the word "undefined" in your introduction.

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Vocabulary: Only 3 basic words for charts were used.

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Vocabulary: Use several vocabularies to present the data in the third paragraph.

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Vocabulary: Use several vocabularies to present the data in the fourth paragraph.

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6
Linking words
meeting the goal of 7 or more
1
Word repetition
meeting the goal of 3 or fewer
1
Grammar mistakes
detected issues

0123456789.0505

Overall Band Score

Coherence and Cohesion: 9.0

Logical structure

Single idea per paragraph

Introduction & conclusion present

Accurate linking words

Variety in linking words

Lexical resource: 4.0

Varied vocabulary

Accurate spelling & word formation

Grammatical Range: 8.0

Mix of complex & simple sentences

Clear and correct grammar

Task Achievement: 4.0

Complete response

Suitable writing tone

Appropriate word count

4 paragraphs

151 words

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Topic Vocabulary:

biomass
ethanol
fermentation
microorganisms
yeast
carbon dioxide
distillation
purification
dehydration
raw materials
storage
distribution
renewable energy
greenhouse gas emissions
sustainable fuel
concentration
impurities
alcohol content
crop growth
conversion process

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The diagram below shows how a biofuel called ethanol is produced.

Computers are being used more and more in education. Some people say that this is a positive trend, while others argue that it is leading to negative consequences. Discuss both sides of this argument and then give your own opinion.

In some cultures, children are often told that they can achieve anything if they try hard enough. what are the advantage and disadvantage of giving children this message.

People living in large cites today face many problems in their everyday life. What are these problems? Should governments encourage people to move to smaller regional towns?

ather. The plans below show the site of an airport now and how it will look after redevelopment next year. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

some people believe that professionals, such as doctors and engineers, should be required to work in the country where they did their training. Others believe they should be free to work in another country if they wish. discuss both these views and give yourown opinion.