When I entered the room, I found Mary ______ at the desk ______ her homework.A．s_刷题宝

题干

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

上一题下一题 0.85难度单项选择更新时间:2011-06-24 08:48:19

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