题目内容：

Spreading an Infection

I’ve made it a habit to smile at people as often as possible, saying some kind words, “hello, thank you, have a nice day”, whatever fits. I have the right situation as I am living in 1. big city with many, many people.

I’m doing this for quite a while now, so I’ve seen all 2. （kind）of reactions, from people feeling 3. （threaten） by a friendly word, reacting  4. （angry） or even aggressively, to people  5.  faces lit up with a huge smile and gave me the  6.（impress） that I’ve made this moment good for them.

Today something happened that I hadn’t yet experienced: Two people, complete strangers 7. me, one in the morning, one in the afternoon, whom I passed on the street without 8. （smile）at them, 9. with a friendly face, looked up from their inner focus, looked at me, started to smile and greeted me friendly while they 10.（pass）.

Have I started a “kindness virus”? That would be great! It makes my day, and I’m still smiling. I hope you do too!