The task is very difficult. I wonder whether we will be able to finish it in the of any o

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。