问题补充：
We’ll have to finish the job, .
A. long it takes however
B. it takes however long
C. long however it takes
D. however long it takes
答案：
A. long it takes however
B. it takes however long
C. long however it takes
(答案→)D. however long it takes
解析：考查状语从句。我们必须完成这项工作无论花费多少时间。
