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 【小题1】 elderly lady there riding on a bike. She couldn't walk very well, 【小题2】 she had a cane (手杖) near her, but she was still there 【小题3】 (work) hard.
After I finished my exercising, I told her that I was going to wait for her 【小题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 【小题5】 (fog) day yesterday in Missouri. I walked her to the car and opened the car door for her, 【小题6】 won me her big smile and gratitude.
I know 【小题7】 is a small thing, but I felt so good inside for helping her. 【小题8】 my help, she could have fallen so 【小题9】 (easy) out in the wet parking lot, and no one would have known she had fallen. I 【小题10】 (know) she needed my help, and her smile was enough to make my day.an
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(答案→)an
解析：
【小题1】an 横线后面有可数名词lady，因为前面的eldly是以元音发音开始，故使用an.
【小题2】so 上下文之间存在着因果关系，她不能很好的走路，所以她用了一个手杖。
【小题3】working 本句是指在那个时候她正在努力，故使用过去进行时的时态。
【小题4】until 连词until直到…才…；要注意前面的动词，如果前面的动词是一个延续性动词就使用until;如果前面的动词是短暂性动词就使用not…until…。
【小题5】foggy 横线后面有名词day，说明使用形容词foggy作为定语来修饰名词day。
【小题6】which 本句是一个定语从句，which引导非限制性定语从句，在句中做主语。
【小题7】it 考查了代词it，在句中作为主语。我知道这是一个小事情。
【小题8】Without 介词without表示条件，如果没有…；如果没有我的帮助，她很容易就会摔倒。
【小题9】easily 副词easily用来修饰动词fall out。
【小题10】knew 本文的基本时态是一般过去时，故使用过去分词knew的形式。