单选题 I suppose that when I come back in ten years' time all these old houses ______ down.
A. will have been pulled B. will have pulled
C. will be pulling D. will be pulled

【正确答案】 A
【答案解析】[解析] in ten years' time是表将来的时间状语，因此主句谓语要用将来完成时，故选A。