题目内容：
When I entered the room, I saw him _____ in a front seat staring at a picture in a strange way.A.to sit
B.is sitting
C.sat
D.sitting
参考答案：
选择题：When I entered the room, I saw him _____ in a fron
- 题目分类：河南师范大学-工商企业管理-大学英语I
- 题目类型：选择题
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A.to sit
B.is sitting
C.sat
D.sitting