Entering the room I found Maryat the desk anda letter. A. seated wroteB. sitting writtenC.

问题补充：

Entering the room,I found Maryat the desk anda letter.

A. seated wrote

B. sitting written

C. seating writing

D. seated writing

答案：

A. seated wrote

B. sitting written

C. seating writing

(答案→)D. seated writing

解析：考查分词用法，本题第一空可以使用seated(形容词),sitting(因为sit与Mary构成主动关系，所以使用现在分词的形式)对宾语进行补充说明，第二空的动词write与Mary构成主动的关系，也要使用现在分词的形式。句意：进入房间，我发现Mary坐在桌子旁边，看着一封信。故D正确。