conceal()
A.to bring great interests
B.to help others
C.to hide, to keep from being seen
proxy()
A.superior intellectual, social, or economic status
B.an agent or a substitute
C.supremacy
confrontational()
A.I clash of opinions and ideas
B.a sudden, violent disruption or upset
C.to express sorrow or regret
apparatus()
A. organization
B. work hard
C. lazy