Martin is my youngest son. He likes staying alone and he seldom laughs. As the boy’s mother, I was _________ about him. I took him to see the _________ in many hospitals, but it didn’t work well.

Nothing could make him happy except the recycling (回收) truck passing by my house. Every afternoon, he rushed to the front of the house, _________ for the truck. When we were late and _________ the   truck, Martin would be very disappointed.

One day, I stopped the truck and _________ myself. “Nice to meet you, too. I’m Vince.” The driver greeted me in a happy _________. “Your coming is the most exciting moment for my son.” I smiled.

After _________ our story, he said, “Could you please give me your phone number? Maybe I can send you a message _________ I arrive.” Then began our friendship with Vince.

Recently, I said to him, “It’s my little boy’s birthday tomorrow. Can you do _________ for him?”          

The next day, as I was standing by the driveway with Martin, we saw the _________ truck running down the street with a loud beep (嘟声). Like a superman in a movie, Vince stopped and walked towards us with a box in his hand. “Today is your birthday, Martin, and here’s a gift.” He handed the box to my son. Inside, there was a green model truck like his. My son, surprised, looked up _________ and thanked him.

After chatting for several _________, he was about to leave for work. I tried to give him some _________ for his help. He kept shaking his head and _________ my money, saying “Today you, tomorrow me.”

I was deeply moved by these _________ words. And now I am ready to help others whenever I can. You will never know when you’re going to be the one that needs help.

Life in the mountains was a new experience for Yang Lei, a volunteer from Peking University.

Her village was 2,000 meters above sea level, and at first the ________ air made her feel sick. The ________ was very simple—teachers ate porridge three times a day. Luckily, Yang Lei’s mother agreed with her daughter’s ________. She said that both she and her husband thought this was a good idea. “Young people today need to ________ different things,” she said.

Most of the ________ lived in school dormitories（宿舍）. They worked very hard. They got up at 5:00 a.m. and read books until 11:00 p.m. They loved having the volunteer teachers there. “There’s no difference between you and them,” says Yang Lei. “They say that we are like big brothers or sisters to them, and they feel ________.”

Some of the students may not be able to go to senior high school or ________. Families were ________ and there often wasn’t enough money for education. “I can do nothing about that,” says Yang Lei, “but I can ________ my students’ eyes to the outside world and give them a good ________ in life.” She says she likes being a good influence on the children’s lives.