问题
选择题
.
Whenever you enter the reading room, you can find all the students _____ at their desks, with their attention _____ on the books, except Tom.
A．sitting, fixing
B．to sit, fixed
C．seating, fixing
D．seated, fixed
答案
答案：D
本题考查非谓语动词。句中seated at their desks在句中作定语，表示状态。第二空考查with的复合结构，宾语their attention与fix为被动关系，故用过去分词作宾语补足语。选D。