Я не знаю как писать в виде ОГЭ (Очевидно что это письмо неформальное, и имя получателя не указано, поэтому пишу чисто как историю).

Once I was going shopping. My mom asked me to buy few products: Flour, strawberries and milk. She wanted to make a pie.

I went to my local shop. I had a notebook where I have written all of my products. When I came, I was looking for stawberries for a long time! I couldn’t really find them, because most of them were too bad. But suddenly I’ve found a basket with fresh strawberries. Also, I had problems with milk: There were no import of milk, so I was really disappointed. But when I was finding flour, I’ve found one package of milk.

After all, I came to the cashbox, and then after having a total bill, I realized that I’ve left all my money at my pocket, which I’ve left on a sofa. This was the most annoying thing in my life! I came home faster, and brought it with me, and finally I’ve paid all my bill and took the products.