I suppose that when I come back in ten years' time, all these ol

I suppose that when I come back in ten years' time, all these old houses will（）. 

A、

be pulling down 

B、

 have pulled down 

C、

have been pulled down 

D、

have been pulling down 

【正确答案】：C
【题目解析】：

从句“我猜想到我十年后回来的时候，这些老建筑都已经被拆掉了。” 将来完成时will have done. 房子是被拆掉，所以用被动语态be done，所以选择C.