Band 5+: The three pie charts show the percentage of total energy consumption from five different sources in 1985, 1995 and 2005.

The report addresses the task by describing the main trends and some specific data for each energy source across the three years. However, there are several inaccuracies and omissions that detract from the overall clarity and completeness. For instance, the statement that nuclear energy 'significantly went down' is not fully supported by the data, as it fluctuates from 31% to 25% to 32%. Additionally, the report incorrectly states that oil decreased overall, when it actually increased from 25% to 30% before falling back to 25%. The description of gas and natural gas is somewhat confusing and lacks precise comparisons. To improve, ensure that all key data points are accurately reported and that trends are described clearly and logically. Organize the information more coherently, perhaps by grouping sources with similar trends, and avoid vague or contradictory statements. Proofreading for grammatical accuracy and clarity is also recommended.

The report has a clear overall structure with an introduction and an overview, but the organization within paragraphs is confusing. The data for different sources is mixed together, and the progression of ideas is not always logical. For example, the second paragraph jumps between gas and natural gas without clear separation, and the third paragraph combines nuclear, renewable energy, and oil in a way that is hard to follow. The use of cohesive devices is limited and sometimes inaccurate (e.g., 'the letter accounted for' is unclear). To improve, use clear topic sentences for each paragraph, group related data logically, and use a range of linking words and referencing to guide the reader.

The report uses some appropriate vocabulary for describing trends (e.g., 'saw increases', 'declined', 'dropped', 'bucked the trend'), but the range is limited and there are several awkward or inaccurate phrases (e.g., 'demonstrates of total energy consumption', 'being in the lowest degree', 'has variety degree'). The phrasing is often unnatural and lacks precision. To improve, expand your vocabulary for describing data (e.g., 'accounted for', 'comprised', 'experienced a rise', 'remained stable') and ensure that word choices are accurate and idiomatic. Avoid informal or vague expressions. Boost vocabulary complexity to elevate the overall score.

The report contains numerous grammatical errors and punctuation issues that significantly affect clarity. There are subject-verb agreement errors (e.g., 'charts demonstrates'), incorrect verb forms (e.g., 'it was increased'), missing articles and prepositions (e.g., 'in 1995before'), and inconsistent use of spaces and punctuation (e.g., '1n 2005'). The sentence structures are often repetitive and lack variety. To improve, focus on basic grammar accuracy, use a wider range of sentence structures (e.g., complex sentences with relative clauses), and proofread carefully to correct punctuation and spelling errors.