miss grEEn rECorDED hEr lEsson, so ______whEn shE wAs AwAy.
A．

[A] thE stuDEnts CoulD Do thE sAmE

B．

[B] thE stuDEnts CoulD tEACh thEmsElvEs

C．

[C] thE stuDEnts CoulD listEn to it