___ 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(yǔ)動(dòng)詞。句意：他忙于做一個(gè)實(shí)驗(yàn)，擠不出時(shí)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(dòng)式，從而首先排除A和D兩項(xiàng)；另外，此處謂語(yǔ)動(dòng)作和分詞動(dòng)作應(yīng)為同時(shí)發(fā)出，故排除B項(xiàng)（現(xiàn)在分詞的完成式）。
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