题目内容：

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在空格处填入一个适当的词或使用括号中词语的正确形式填空。

I enjoy doing physical training in my free time. Yesterday, when I was working out at a gym on my lunch hour, I saw  1.  elderly lady there riding on a bike. She couldn't walk very well,  2.  she had a cane (手杖) near her, but she was still there  3.  (work) hard.

After I finished my exercising, I told her that I was going to wait for her  4.  she got done and that I would walk her out to her car. It was a little far to her car and it was a  5.  (fog) day yesterday in Missouri. I walked her to the car and opened the car door for her,    6.  won me her big smile and gratitude.

I know  7.  is a small thing, but I felt so good inside for helping her.  8. my help, she could have fallen so  9.  (easy) out in the wet parking lot, and no one would have known she had fallen. I  10.  (know) she needed my help, and her smile was enough to make my day.