When I entered the room, I found Mary at the desk her homework.
A. sat; doing
B. sitting; to do
C. seating; to do
D. seated; doing
网友回答
A. sat; doing
B. sitting; to do
C. seating; to do
(答案→)D. seated; doing
解析： 考查非谓语动词。第一个空考查过去分词作宾补， seat动词“坐”没有现在分词形式，故用 seated，第二个空用doing做伴随状语。故选D。句意：当我进入房间的时候，我发现玛丽坐在桌旁，做作业。