阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
Christmas is no fun when you're poor. Twenty years ago I was a young,     （struggle）, substitute（替补） teacher whose calls into work had been few．Money was tight, bills were due        my wife and I couldn't even afford to get Christmas gifts for each other．The only gifts we could get for our children were a few soft toys that I had found        （sell）at half price in the supermarket．I opened the door and brought in the gifts I         （hide） in our old car's trunk．Then I handed         to my son and daughter．I watched with a sad smile as they did their best to tear off the wrapping paper．As they pulled out their toys, though, I noticed their faces lit up and    jumped up and down．My daughter   （happy） hugged her toy and then hugged her Mom and me as well．I laughed as I watched my children play with their toys _ hours, and thanked God for the   （great） happiness I had ever been given．Till today I still treasure        gift of pure love that my son and daughter gave me that day．