Answer:
Dear Mother,
I am writing this letter to inform you about my examination. As you know, my final examination was due this month and my preparation for it wasn't that great because I got a severe fever last month which made me miss a couple of weeks for the preparation. So, I had to make little adjustments in my schedule and I had managed my time according to it and my exams went great. The exams performance was a little under my expectation but it was satisfactory nevertheless. I am hoping good numbers in the result and you will hear good news for sure. Much love.
Yours truly,
Your name
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