阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。
One day, I took my daughter to the park. As soon as we got there, my daughter ____(run) to the swing（秋千）and asked for a push. When I was helping my daughter, I noticed another girl trying to make her own swing____(go) high by herself. Her old grandmother was sitting on the chair nearby and smiling at us. Happily, my daughter ____(push) higher and higher by me.
Then I walked towards the little girl. I asked ____ I could give a big push to her. She smiled and said “Yes”. For the next hour, I pushed the swings, and played ____ my daughter and the little girl. When we went home, I was tired ____ very happy.
One day two years____(late), after a day's work, I went to pick up my daughter before going home. While I was waiting outside the school gate, a little girl smiled ____(sweet) at me and gave me a big hug. As I watched her run away, I realized that she was the girl whom I gave a big push in the park.
So far, I couldn't forget her sweet smile and the warm hug that she gave me. In fact, if we give love to others, love will find its way back to us. It may travel ____ heart to heart or it may blossom（开花）in the heart. The love we share, the ____(kind) we give, and the happiness we create will come back to us with a pleasant surprise.
