单项选择题

Mr.Hobbs left his office，still（）why his secretary had been unhappy recently.

A.puzzling
B.puzzled
C.was puzzled
D.was puzzling

<上一题 目录 下一题>
热门 试题

判断题
杨绛的丈夫是钱基博。( )
单项选择题
火车车轮轴属于();
A.转轴
B.心轴
C.传动轴
相关试题