I saw Tom into the classroom without .
A. slide; found
B. sliding; find
C. to slide; being found
D. sliding; being found
网友回答
A. slide; found
B. sliding; find
C. to slide; being found
(答案→)D. sliding; being found
解析：第一空考查现在分词做宾语补足语，see sb doing看见某人正在做，第二空考查动名词做without宾语，Tom和find是被动关系，用动名词的被动，句意是;我看见汤姆真溜进教室没有被发现。选D。