阅读短文，理解其大意，从A、B、C、D四个选项中选出可以填入空白处的最佳选项。Traffic police in Wuhan，Hubei Province，have finished the wish of a sick 5﹣year﹣old girl. They1 her to be a traffic officer for a day.
Liu Yihan was diagnosed（诊断） with a rare（罕见的） cancer that chiefly affects children under the age of 52 her wish to keep everyone safe. Liu never complains to her mother Hu Yuting，but her wish to be a traffic officer really 3 her mother's heart.
"I hope her dream is strong enough to get her through treatment，which will be 4 ，" u said. When she told her daughter's story to the traffic police brigade in Qiaokou District，the community where the family lives，they were moved and 5 to help Liu's wish come true.
Du Zewen，an officer with the brigade，said that the chief officers decided to help the mother and the little girl. He told the other members of the brigade6 of becoming a traffic officer come true. She is so 7 ，but she is suffering（忍受） from such a painful disease. "
On the afternoon of Septemnber 20，Liu and her mother were warmly welcomed by the brigade. They 8 her in a specially made uniform and told her that she was a "visiting policewoman". Little Liu was taken through the everyday routine of a traffic officer and taught a few basic 9 . She was excited and soon went on duty with the other members.
Just as her daylong experience was about to finish，the vice﹣director said，"As your commander（指挥官）10 . First，listen to your mother and finish your treatment. Second，study hard and exercise to become a real traffic policewoman!"
