阅读理解B篇材料中，Mary Chan经常听爷爷讲起他难忘的老师Mr. Tan．再读本篇材料，假如你是Mary，请以"I have been wondering…"为题，简要介绍Mr. Tan，写写你对Mr. Tan严厉教育行为的看法，以及如果你也遇到了这样严厉的老师，你的想法或做法．

要求：（1）词数100左右，题目与开头已给出，不计入总词数；

（2）可适当归纳引用文中对Mr. Tan的描述，但要以自己的感想为主；

（3）文中不得出现任何与考生相关的真实信息．

I have been wondering…

    When I was little my grandfather often told me about his teachers． He said he would never forget Mr. Tan， a strict teacher I have been wondering about it．______________．