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The diagram below shows how a wood pellet boiler heats a house.

The diagram below shows how a wood pellet boiler heats a house. ABkWx
The diagram shows how a wood pellet boiler is used to provide heat and hot water for a house. The pellets are burned to produce heat, which is then distributed through the house. To begin, a truck delivers wood pellets to the house, and they are stored in a large container. Then, when heat is needed, the pellets move to the boiler, where they are burned to heat up water. Next, the hot water moves to several places in the house. Some of it goes to pipes under the floor for underfloor heating. Some of it also goes to a radiator to heat the rooms of the house. Additionally, some of the hot water goes to a hot water tank, which holds the water for washing and bathing. After the hot water has heated the house, it returns as cool water to the boiler, where it is heated to be used again.
The diagram
This phrase/word (depending on the context) can be potentially replaced with :
shows
how a wood
You use this word too often, consider replacing it with
pellet
boiler is
This phrase/word (depending on the context) can be potentially replaced with :
used
to provide
You use this word too often, consider replacing it with
heat
and hot
You use this word too often, consider replacing it with
water
for a
You use this word too often, consider replacing it with
house
. The
You use this word too often, consider replacing it with
pellets
are burned
to produce
You use this word too often, consider replacing it with
heat
, which is then distributed through the
This phrase/word (depending on the context) can be potentially replaced with :
house
.

To
This phrase/word (depending on the context) can be potentially replaced with :
begin
, a truck delivers wood
You use this word too often, consider replacing it with
pellets
to the
You use this word too often, consider replacing it with
house
, and they
are stored
in a large container. Then, when
You use this word too often, consider replacing it with
heat
is needed
, the
You use this word too often, consider replacing it with
pellets
This phrase/word (depending on the context) can be potentially replaced with :
move
to the boiler, where they
are burned
to
You use this word too often, consider replacing it with
heat
up
You use this word too often, consider replacing it with
water
.
Next
, the hot
You use this word too often, consider replacing it with
water
This phrase/word (depending on the context) can be potentially replaced with :
moves
to several places in the
You use this word too often, consider replacing it with
house
.
This phrase/word is too simple and can be replaced with:
Some
of it goes to pipes under the floor for underfloor heating.
This phrase/word is too simple and can be replaced with:
Some
of it
also
goes to a radiator to
You use this word too often, consider replacing it with
heat
the rooms of the
You use this word too often, consider replacing it with
house
.
Additionally
,
If the text is a generality, 'of the' is not necessary. Did you mean "some"?
some of the
hot
You use this word too often, consider replacing it with
water
goes to a hot
You use this word too often, consider replacing it with
water
tank, which holds the
You use this word too often, consider replacing it with
water
for washing and bathing. After the hot
You use this word too often, consider replacing it with
water
has heated the
You use this word too often, consider replacing it with
house
, it returns as cool
You use this word too often, consider replacing it with
water
to the boiler, where it
is heated
to be
This phrase/word (depending on the context) can be potentially replaced with :
used
again.
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IELTS academic The diagram below shows how a wood pellet boiler heats a house.

Academic
  American English
2 paragraphs
152 words
6.0
Overall Band Score
Coherence and Cohesion: 5.5
  • Structure your answers in logical paragraphs
  • ?
    One main idea per paragraph
  • ?
    Include an introduction and conclusion
  • ?
    Support main points with an explanation and then an example
  • Use cohesive linking words accurately and appropriately
  • ?
    Vary your linking phrases using synonyms
Lexical Resource: 5.5
  • Try to vary your vocabulary using accurate synonyms
  • Use less common question specific words that accurately convey meaning
  • Check your work for spelling and word formation mistakes
Grammatical Range: 7.0
  • Use a variety of complex and simple sentences
  • Check your writing for errors
Task Achievement: 6.5
  • Answer all parts of the question
  • ?
    Present relevant ideas
  • Fully explain these ideas
  • ?
    Support ideas with relevant, specific examples
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