China has been pushing the reform of public hospitals _______ all its citizens.   

Since drug abusers have difficulty＿the addiction, support groups where they can talk about their struggles and find new ways to manage in the world are often needed.

________, she stood and stared while the police arrested her husband.

—The tree is so tall. —Yes. It ______nearly 20 metres. 

 Li Keqiang, ______ head of the Chinese government, said in his report on March 5,2014 that the government would try every ______ to deepen the reform further.