—I hear your uncle works in Beijing. Can you tell me ?—For 5 years.A. when he went thereB.

—I hear your uncle works in Beijing. Can you tell me ?
—For 5 years.
A. when he went there
B. when he will go there
C. how soon he will come back
D. how long he has stayed there

A. when he went thereB. when he will go thereC. how soon he will come back(答案→)D. how long he has stayed there解析：句意：——我听说你叔叔工作在北京，你能告诉我他已经在那呆多长时间了吗？——五年。根据答语可知是问他在那已经呆了多长时间，故选D。

就是这个解释