题目内容：

Police officer Mark Borsboom from Toronto is famous on the Internet, but he doesn't understand what the________is.

And his opinion of helping others hasn’t________, though a photo of him has been liked and shared on the Internet by many people.

The photo shows that the police officer is doing a (an)________, good thing—tying an old man' s shoelace(鞋带)

The thing________when Mark was on duty, helping cars leave the parking garage(车库). ________he was standing near the exit, an old man walked close to him. His hands had no________because of a health problem. He had to walk a long way to meet his son, but his shoelace was undone(松开的)

He asked Mark if he would________tying the shoelace for him. "I didn’t think anything of it. I agreed happily and tied his shoelace. I didn't know someone had photographed it. ”

The photographer was Jason Cassidy, who happened to be walking by when he saw the act of__________

Jason sent the photo on the Internet and it________became popular.

________there are many more interesting and dangerous things that Mark has done for his work. His normal (正常的) job is ________ bad men. He describes it as a million times harder than helping someone tie the shoelace. ”

That’s why he's a bit________that his small and simple act has caught people's attention.

1.A.plan B.reason C.problem D.advice

2.A.missed B.found C.prepared D.changed

3.A.big B.hard C.simple D.public

4.A.happened B.recorded C.appeared D.reached

5.A.While B.Until C.Before D.Whenever

6.A.money B.phone C.pen D.feeling

7.A.keep B.mind C.avoid D.continue

8.A.courage B.bravery C.kindness D.confidence

9.A.suddenly B.probably C.usually D.quickly

10.A.In fact B.For example C.By the way D.As a result

11.A.acting B.catching C.teaching D.watching

12.A.excited B.proud C.happy D.surprised