—Before he went abroad, he spent as much time as he ____ English.

A．could learning

B．learned

C．to learn

D．could learn

《国务院关于进一步加强企业安全生产工作的通知》规定，企业因安全生产技术问题不解决产生重大隐患的，只对其主要技术负责人员给予处罚；发生事故的，依法追究责任。