会计从业资格管理机构应当对（）实施监督检查。

A.从事会计工作的人员持证并注册情况

B.持证人员从事会计工作和执行国家统一的会计制度情况

C.持证人员遵守会计职业道德情况

D.持证人员接受继续教育情况

She _____volleyball regularly for many years when she was young.

A．played.

B．was playing

C．has played.

D．had played