第二节语法填空 (共10小题，每小题1.5分，满分15分)
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，并将答案填写在答题卡标号为31～40的相应位置上。
Last year, I was driving home one night, just around the holidays.  I was about to turn onto the highway31  I noticed a rather sad looking figure holding a sign.   I honestly don't recall 32  the sign read, but I did know that it was getting very cold outside.  This man was obviously homeless, and was completely exposed33  the elements.
I happened 34 (purchase) a new blanket.  It was in my car, still packed in plastic from the store.  I thought for a moment,35 (roll) down the window, and gestured to the man.  He ran over to my vehicle.  I told him that he looked cold, and he laughed.  I explained that while I didn't carry any cash, I 36  happen to have a new blanket, and asked him if he could use it.   He was thrilled.  I told him that it was37 , as long as he agreed to do something kind for someone else 38  return.
I am pretty sure that  39  made his day, and kept him warm through the evening. 
I know I felt the 40 (warm).