You should inspect the wheels regularly, and replace them ______ they cause you trouble.
Universities have the right to develop in their own way, but whatever they do, their polices must be consistent with the nation’s _________laws.
At the annual meeting, the mayor of Jingmen Xiao Juhua urged the related departments to take _______ measures to ensure equal rights for migrant children.
It is common that many parents choose to rent a house near schools to _______ their children during their school years.
His grandfather has kept reminding him not to _______ with bad companions whether in school or in society.
It’s widely agreed that the _______of our sports system, rather than foreign coaches, will be helpful to Chinese football.