___ himself in carrying out an experiment, he can’t spare time to look after his children.
A．OccupiedB．Having occupiedC．OccupyingD．Having been occupied
C
考查非謂語動詞。句意：他忙于做一個實驗，擠不出時間照看孩子。此處he與occupy存在邏輯主謂關(guān)系，故使用現(xiàn)在分詞主動式，從而首先排除A和D兩項；另外，此處謂語動作和分詞動作應(yīng)為同時發(fā)出，故排除B項（現(xiàn)在分詞的完成式）。
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