.．When I came into the classroom I found him with his study.A. occupiedB. occupyingC. t

问题补充：

.

．When I came into the classroom , I found him with his study.

A. occupied

B. occupying

C. to be occupied

D. was occupied

答案：

(答案→)A. occupied

B. occupying

C. to be occupied

D. was occupied

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