When I entered the classroom, I saw the students in their seats.
A. sitting
B. are sitting
C. sat
D. to sit
网友回答
A. sitting
B. are sitting
C. sat
D. to sit
解析:考查宾语补足语用法。See sb do sth看见某人做了某事(事情的全过程);see sb doing sth看见某人正在做某事(动作正在发生)。句意:当我进入教室的时候,我看见学生们正坐在他们的位置上。