问题补充:
with her work, she didn even notice the heavy snowfall outside the window.
A. Occupying
B. To be occupied
C. Having occupied
D. Occupied
答案:
A. Occupying
B. To be occupied
C. Having occupied
(答案→)D. Occupied
解析:考查非谓语动词。分析句子结构可知,此处用过去分词作原因状语。be occupied with sth 表示“忙于某事”。