—One week’s time has been wasted.—I can’t believe we did all that work for .A. sometimeB.

问题补充：

—One week’s time has been wasted.

—I can’t believe we did all that work for .

A. sometime

B. nothing

C. everything

D. anything

答案：

A. sometime

(答案→)B. nothing

C. everything

D. anything

解析：do for nothing,be meaningless和be wasted为同一词组。