I found them __at a desk writing.A seat B sat C seated D sea

I found them __at a desk writing.A seat B sat C seated D sea ---myself,i began to eat.A Be seated B.Seated C.Seat D.Seati I found Vivian ( )at her desk.A.seated B.being seated i found him___(seat) on a bench 为什么是seated? I saw him ____under a tree,thinking.A.sat B.seated C.seating No sooner had I __than the play began.A.been sat B.seated C. we----at last A.found B.found them out C.look them D.find There _______some writing paper on my desk.A is B are C am D When I arrived, I found the boy_____there A seating B seated I found him_in an armchair.A:seated B:seating.选哪个,为什么? I found the little boy ( ) A.B.C.D. in the reading room,we found her seated at a desk,with her a