The chemistry teacher required the students _______ more attention _______ the lab clean.
As a member of the society,we are_____to obey whatever law for the sake of the public.(泰安市)
Having finished his morning work,the manager stood up behind his chair,_____himself.(青岛市)
After China launched a______to popularize Chinese, lots of Confucius colleges have appeared in foreign universities.(青岛市)
Though there are some differences in American education and Chinese education, both systems are______excellent graduates. (济南市)
Companies must consider how they______data so that their employees can find it fast. (滨州市)