— Could you tell me _____ the Bamboo Garden?

— The day after tomorrow, I think. [ ]

A. when will you visit

B. when you will visit

C. when would you be visiting

D. when you would be visiting

下列实例中，增大有益摩擦的是 [ ]

A．下雪后，汽车上山时，车轮上绕有防滑铁链

B．给自行车的轴加润滑油

C．机器转动部分装有滚动轴承

D．在箱子下面装上轮子