某英語報紙正舉行以“感恩”為主題的征文活動。請根據下面的提示，用英語寫一篇短文投稿，記敘上周五上午放學后劉老師為你答疑一事，并談談你的感受。

What happened after the lunch bell rang last Friday？

1. Your classmates went for lunch; you remained to ask Mr Liu questions.

2. Half an hour later, you were still asking questions;

3. ...

Your feelings

 ...

注意：（1）短文須包括上述內容，應適當增加細節，以使行文連貫。

（2）詞數：100左右，開頭部分已給出（不計詞數）

We have every reason to be thankful to many people around us.
 

參考范文：

    We have every reason to be thankful to many people around us.Among them is Mr Liu, a very nice math teacher of mine.

    Last Friday after the lunch bell rang, my classmates went for lunch, but I remained to ask Mr Liu some questions. Half an hour later, most of my classmates came back from lunch, but I was still asking him questions, and he was so patient.

    It was a small act for Mr Liu, because he is always so helpful and kind to us. However, we often take such kindness for granted. In fact, kindness is found everywhere in  our life, and we should always be grateful.