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

A.a; the

B./;/

C.the; the

D.a;/

答案及解析： D

解析：

考查冠词的短语用法：at a loss：不知所措；

word指：消息；

信息；

前面不加冠词。