Entering the room I found Mary at the desk and a letter.A. seated; wroteB. sitting writt

问题补充：

Entering the room, I found Mary at the desk and a 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：句意:我进入房间，发现玛丽正坐在书桌旁写信。find+宾语+宾语补足语(doing/done). 宾语Mary与补足语之间是主动关系，因此第二空用现在分词writing。seated “坐着的”表示主动，因此第一空用sitting或seated.故选 D。