Sandy borrowed the novel from the library last week and （keep） it for 5 days．
Yuan Longping，one of the （great） scientists in the world，is known as "Father of hybrid rice".
Parents and schools make （rule） to help the students to become better and better.
The Communist Party of China （中国共产党） has （it） 100﹣year anniversary this year.
The （seven） Big Data Expo was held successfully in Guiyang in May，2021.
Mary doesn't （real） care if her friends are the same or different.