—You were out when I dropped by your house.

— Oh, I_________ in Zhongbai Supermarket with my parents.

A．was shopping

B．had shopped

C．am shopping

D．have shopped

马克思认为造就全面发展的人的唯一方法是( )

A．理论联系实际

B．做到因材施教

C．实现教育机会均等

D．教育与生产劳动相结合