问题补充:
The task is very difficult. I wonder whether we will be able to finish it in the of any other helpers.
A. appearance
B. escape
C. spare
D. absence
答案:
A. appearance
B. escape
C. spare
(答案→)D. absence
解析:A. appearance出现,外貌,B. escape逃离,C. spare备用零件,备用轮胎,D. absence缺席,不在,句意:这个任务很困难,我想知道没有别人的帮助是否能够完成。In the absence of“在…不在的时候”,所以选D。