Band 7+: You have moved into a new house and want to invite a former colleague to a housewarming party. Write a letter to your former colleague. In your letter: - explain why you have moved - give them some details about your new home - provide information about the party (date, time, and location)

The letter fully addresses all parts of the task. The writer provides a clear description of the apartment, specifies the date and location for the party, and gives a clear instruction on how the friend can assist. The tone is appropriately informal for a letter to a friend, and the structure is logical and easy to follow. No improvements are necessary as the requirements are met comprehensively. The letter falls short of the required 150 words.

The letter is exceptionally well-organized. The progression of ideas is logical, moving smoothly from the announcement of the move to the party details and finally the request for help. Each bullet point from the task is addressed in its own clear section, making the message effortless to follow.

The vocabulary used is appropriate, natural, and perfectly suited to the informal tone of a letter to a friend. Words like 'spacious' and 'comfortable' add descriptive quality without being forced. The language is precise and error-free. Boost vocabulary complexity to elevate the overall score.

The grammatical structures are accurate and varied. You have used a good mix of simple and complex sentences (e.g., using 'and' to join clauses and conditional structures like 'I would be very happy if...'). Punctuation is used correctly throughout. To further enhance the writing, you could experiment with even more complex structures, but for this task, the current level is excellent.