— How long do you think it will be the USA recovers from the losses of the financial cris

问题补充：

— How long do you think it will be the USA recovers from the losses of the financial crisis?

— Perhaps four or five years.

A. when

B. since

C. that

D. before

答案：

A. when

B. since

C. that

(答案→)D. before

解析：此题考查固定句型：It+ will be +时间段+ before +其它 意为多久才……。句意为你认为多久美国才能从经济危机的损失中恢复过来呢？ 也许四年或五年。所以选D。