“I       in the room, watching TV broadcast about the earthquake.” I told the policeman who had driven here to question me.

A．was staying

B．stay

C．stayed

D．am staying

在PowerPoint中，某些幻灯片在普通视图下能显示但在放映时却不出现，是因为对这些幻灯片执行的操作是

A．删除

B．隐藏

C．移动

D．剪切