According to the newsman as a result of heavy fog expressway has been closed up until f

问题补充：

According to the newsman, as a result of heavy fog, expressway has been closed up until further notice.

A. a; the

B. the; 不填

C. 不填;an

D. the; the

答案：

A. a; the

B. the; 不填

C. 不填;an

(答案→)D. the; the

解析：考查冠词。题中两个the均为特指，分别特指大雾和高速公路，故选D。