and they will finish off the challenging job. A. In a weekB. A week later C. After a week

问题补充：

and they will finish off the challenging job.

A. In a week

B. A week later

C. After a week

D. Another week

答案：

A. In a week

B. A week later

C. After a week

(答案→)D. Another week

解析：短语辨析. A.在一周内;B.一个星期后;C. 一个星期后;D. 另一个星期.再有一个星期.句意,再有一个星期,他们就会完成这件有挑战性的工作.选D.