Our teacher saw us ______ on the desks and went out of the classroomA.to sit B.sat C.siting D.sitting

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Our teacher saw us ______ on the desks and went out of the classroomA.to sit B.sat C.siting D.sitting
Our teacher saw us ______ on the desks and went out of the classroom
A.to sit B.sat C.siting D.sitting

Our teacher saw us ______ on the desks and went out of the classroomA.to sit B.sat C.siting D.sitting
D
有see sb do和see sb doing
这里没有选项是sit,而sit的ing形式是sitting