请教：2009年11月北京地区成人英语三级考试（A)卷第2大题第1小题如何解答？

【题目描述】

Directions: In this part there are 30 incomplete sentences. For each sentence there are four choices marked A, B, C and D. Choose the ONE answer that best completes the sentence. Then blacken the corresponding letter on the Answer Sheet.

16. The driver was at ____ loss when ____ word came that he was forbidden to drive for speeding.

A a;/

B a;the

C the;the

D /;/

答案分析：

【我的疑问】（如下，请求专家帮助解答）

请问题中的word 为什么不是特指呢？