---- Is there anything about your high school life you wish you’d done differently?

---- I regret that I ______ earlier what I really like doing.

A．don’t realize

B．didn’t realize

C．haven’t realized

D．hadn’t realized

“体者，载知识之车而寓道德之舍也”出自（）。

A.《体育颂》

B.《学校体育之研究》

C.《体育之研究》

D.《青年的体操》