You recently sent some documents by post, but they did not arrive at the destination. Write a letter to the post office manager. In your letter, give details of the situation describe the documents say what action you want the post office to take
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IELTS says that you should write a minimum of 150 words in writing task 1. If you go under word count you will lose marks in task response.
A very long letter will not give you a higher band score.
Aim for between 160 to 190 words in writing task 1. This will ensure a concise letter and will be realistic in terms of time management. You have only 20 minutes to write the letter and you need around 5 minutes of planning time, so you will not be able to write a long letter in 15 minutes.