Band 7+: You promised to help a neighbor with their garden but failed to do so due to unforeseen circumstances. Write a letter to your neighbor apologizing for not keeping your promise. You should include details about: - what prevented you from helping - why you are particularly sorry for letting them down - how you intend to make it up to them

The letter appropriately addresses the task, covering all three required points: explaining the distraction (work emergency), expressing regret for leaving the neighbor to work alone, and offering to make up for it (treating them to a night out). The tone is polite and apologetic. However, the letter could be improved by explicitly acknowledging the neighbor's effort and the burden of doing the work alone, and by offering a more practical or specific make-up action (e.g., rescheduling to help on a particular day). Additionally, the opening could be more formal with a proper salutation (e.g., 'Dear Eunice') and a closing (e.g., 'Yours sincerely'). The letter falls short of the required 150 words.

The letter is well-organized with a clear apology, an explanation, an offer to make amends, and a closing. The flow is smooth and easy to follow, though the letter could be more formally structured with clear paragraphs and a proper salutation and sign-off. Overall, the message is coherent and the cohesion is adequate.

The vocabulary is appropriate and varied, with natural phrasing such as 'emergency nature of the call' and 'make it up to you'. There is a good range of expression, though more sophisticated and formal vocabulary could enhance the tone. The language is clear and accurate, with only minor phrasing refinements possible.

The grammar is largely accurate, with only minor errors and phrasing issues. The letter demonstrates a good range of sentence structures, including complex sentences. Punctuation is used correctly throughout. To achieve a higher band, the letter could use more varied grammatical structures and ensure flawless accuracy.