Allof       sudden,Icaught       sightofmyteachercoming...

問題詳情：

All of        sudden, I caught        sight of my teacher coming to the classroom.

A. a; /                   B. /; /             C. /; a                 D. a; a

【回答】

A

【解析】all of a sudden意為“突然”；catch sight of意為“看見”。故選A。

知識點：冠詞

題型：選擇題