When Will Restall was in fifth grade, he received bus safety training at school. Local bus drivers taught students about how to ________ the buses’ two-way radios. A two-way radio is a radio that can both send and ________ messages. The user can both talk and listen, it’s also called walkie-talkies (对讲机). And they show the students how to use them in emergency (紧急) situation. Will used what he learned to help a hurt bus driver get medical treatment ________. People in his hometown now call the 11-year-old a hero for his ________ actions.

Will was taking the school bus to school one morning. Like every other student on the bus, Will was playing a video game on his phone. He had to wait 10 minutes or so before he could ________ the bus.

________ then he heard a loud noise and looked up to see what happened. He saw that the bus driver was no longer in the driver’s seat. She had passed out (昏倒) and fell over on the bus’ stairs.

Will left his seat, with the two-way radio, reported that the driver was hurt. The radio on each ________ let Will’s friends hear him report the accident. Soon, another bus driver and an ambulance (救护车) arrived to help. When they got there, the bus driver was ________ and sitting up, but not speaking. They sent the driver to the hospital.

For most people, birthdays are a time for receiving gifts. But for ________ ice cream seller in Singapore, it's exactly the opposite. The ice cream seller Uncle Jimmy gives out free treats each year on ________ birthday.

Every weekday, the 72-year-old man drives his motorcycle to the same spot he ________ at for the past 15 years, sets up his stall（摊位）and waits for customers. But March 22—his birthday—is a little different. ________ this day, people in a long queue hope to get the free ice cream he gives out.

Everything ________ by 5 p.m. this year. Some people came late and there was nothing left, ________ Uncle Jimmy told them to come back the next day. He ________ give it to them then.

It all started from his 70th birthday that Jimmy decided to celebrate by giving out 700 free ice creams. “Many people are so stressed in Singapore. So I want to give free ice cream ________ them happy,” Jimmy said.

The free ice cream was quickly sold out and Jimmy had given away ________ 900 treats by the end of that day. He decided to make free ice cream a birthday tradition, and to add 1, 000 ice creams to meet the demand（需求）.

When asked ________ a loss（亏损）, he said, “I don't think of it that way. As long as people are happy, that's OK.”

On Jan 23, Wuhan was locked down. Hua Yuchen, a music teacher at Wuhan’s Ganghua Elementary School, saw a ________ on WeChat looking for volunteers to fight the virus（病毒）. She registered（登记）at once.

“At first, I had no idea what kind of work I was going to do,” Hua said. “But as a Wuhan native, I knew I ________ do something for my hometown, ________ I am just an ordinary person and cannot save patients as doctors do.”

Having been a volunteer in Wuhan for more than 30 days, Hua had been filling in where help was most needed. She sent medical workers to and from work. She took the ________ of drivers at toll stations（收费站）. She carried goods and worked as a cleaner at a hospital.

As her parents’ only child, Hua didn’t tell them that she would do volunteer work at first.

She thought that they would worry about her. However, when she finally told them, they ________ with her.

Hua says she wants to share her volunteer experience with her students. She will talk to them about what they should do when the epidemic (流行病) is over.