问题补充：
How long are you staying there?
-----,but I will try to be back as soon as possible.
A. It all depends.
B. It doesn’t matter.
C. Every three weeks.
D. Not very long.
答案：
(答案→)A. It all depends.
B. It doesn’t matter.
C. Every three weeks.
D. Not very long.
解析：通过but I will try to be back as soon as possible.可知情况不定，所以答案A. It all depends看情况吧It doesn’t matter 没关系，Every three weeks每三周，Not very long时间不会太长
