On catching sight of his mother, the little boy _________ his grandmother and threw himself into his mother’s arms.

A．kept away from

B．broke away from

C．got away with

D．turned away with

党的各级委员会实行（）。

A.集中领导和分工负责相结合的制度

B.集体领导和个人分工负责相结合的制度

C.集体领导和分工负责相结合的制度