Band 4+: You were supposed to meet a close friend for their birthday dinner, but you completely forgot and missed it. Write a letter to your friend. In your letter: - Apologize sincerely for missing the dinner - Explain why you forgot and why you didn't contact them sooner - Suggest a way to make it up to them.

The letter appropriately addresses all three task requirements: apologizing for forgetting the birthday, explaining why it was forgotten (exam preparation), and suggesting a celebration (dinner this weekend). The tone is sincere and friendly, which suits the context. However, there are minor lapses: the salutation lacks a comma after 'Dear suraj', and there are a few spelling errors ('extremly', 'excause', 'had love' should be 'would love'). Additionally, the letter could be slightly more detailed in the suggestion for celebration to fully meet the 'suggest how you will celebrate together' requirement. To improve, proofread for spelling and grammar, and consider adding a specific detail about the dinner (e.g., a favorite restaurant or activity) to make the suggestion more concrete. The letter falls short of the required 150 words.

The letter has a clear structure with an apology, explanation, and suggestion for celebration. However, the flow is slightly disrupted by the lack of paragraph breaks and some abrupt transitions. Consider using more cohesive devices like 'Firstly,' 'Moreover,' or 'In addition' to link ideas more smoothly. Also, ensure each paragraph focuses on a single main idea for better clarity.

The vocabulary is adequate but somewhat limited and repetitive. Words like 'special day' and 'disappoint' are used multiple times. To improve, incorporate a wider range of expressions, such as 'significant occasion,' 'let you down,' or 'make amends.' Also, correct spelling errors like 'extremly' (extremely) and 'excause' (excuse) to enhance lexical accuracy.

There are several grammatical errors and punctuation issues that affect clarity. For example, 'i' should be capitalized, 'had love' should be 'would love,' and 'it will be' should be 'It will be.' Additionally, the sentence 'although this is not an excause' is awkward and contains a spelling error. Work on using a variety of sentence structures, such as complex sentences, and proofread for basic grammar and punctuation mistakes.