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________ with his work in the Satellite Launch Site，he could not spare any time to stay with his parents though they are very old.
A．As occupying B．OccupiedC．Having occupied D．To occupy
B
考查過去分詞作狀語。be occupied with 忙于做某事，句意：他忙于他的工作在衛(wèi)星發(fā)射基地，他不能抽出時間和他的父母在一起，盡管他們年紀大了。故選B。
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