1. (2020八下·深圳月考) 阅读下面短文，从短文后所给的A、B、C三个选项中选出能填入相应空白处的最佳选项。

I'm from Italy, and I take the bus every day. Buses are really crowded here, so passengers are1 happy.

One day, it was very hot andhumid(潮湿的). I tried to open one of the windows, but I didn't make it. So I2 getting fresh air. At that time, a young man saw this. He tried to get close to the window and then3 it for me. I felt thankful and smiled at him. He got a4 when I smiled at him. At first, he wasn't sure who I smiled at. But when he knew that my smile was, in fact, especially for him, he became so5 that he smiled back at me.

It was such a simple act, but it 6  my day. It wasn't the first time that a smile 7  my mood(心情) because of a person that I didn't know.

That's 8  I started leaving little smile notes in town, and created The Smile Chain, a Facebook page where I hoped that the other people could see, give and get 9. I think a smile is the most 10  language in the world, and even a little kindness can make other people's day.