One day, I took my kids to the local playground. The minute we got there, my daughter ran to the swing （秋千） and asked for a push. When I was helping my daughter, I _________another girl trying to make her own swing go high by herself. Her old grandmother smiled at me, _________on the chair nearby. Maybe she was too old and tired to play together with her granddaughter.

I gave my daughter a big push and then walked towards the little girl. I asked gently _________I could do for her. She smiled and said quietly but happily, with her big shining eyes, "Could you please give me a push, too?" For the next two hours, I kept pushing the swings and playing with my two little children and the little girl. When we got home, I was very tired. But my heart was flying much _________ than the swings.

One day, two years later, after a long day's work, I was a bit tired. But I needed to _________kids before going home. While I was waiting outside the school gate beside my car, a little girl came over and smiled sweetly at me. She gave me a big hug _________she got on her school bus. As I watched her running away, I didn't feel _________ anymore.

In life, the love we give to _________ will find its way back to us. It may travel from heart to _________or it may blossom（开花）in the heart which it was planted in. The love we share, the kindness we give, and the happiness we create will always come back to us__________a big surprise.