Let me burrow a paragraph from previous lesson. “Examiners will ask you to write not less than 150 words and penalize if the answer is too short. Although test-takers will not be penalized for writing more than 150 words, what should be kept in mind is that giving too much than required may become an overdose …ah! and you may end up with less time for your task 2, you know the consequences, right?“
Thus, practice your writing task with 175 words in your mind. If you need to add or omit one or two sentences than the average you practice in home, it will still be within the dose i.e 150-190.