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:考查非谓语动词。seated和sitting 表坐着的状态,第一格分词作find后面宾语的补足语;根据句意,发现Mary正坐着,故seated 和sitting均可。排除C; 第二格,仍然是宾语补足语,补充说明Mary的状态,而Mary和write之间是主动关系,故用writing。