问题补充：
--- Could you tell us ? ---For about two weeks.
A. how soon you will be back
B. how long you will be there
C. how soon are you going to be back
D. how long are you going to be away
答案：
A. how soon you will be back
(答案→)B. how long you will be there
C. how soon are you going to be back
D. how long are you going to be away
解析：句意：--你能告诉我们你在这里将要待多长时间？--在约两个星期。宾语从句用陈述语序，对时间段提问用how long进行提问。故选B.
