in writing a lecture speech on AIDS prevention she has no time to attend to her sick mot

问题补充：

in writing a lecture speech on AIDS prevention , she has no time to attend to her sick mother .

A. Occupied

B. Occupying

C. To be absorbed

D. Absorbing

答案：

(答案→)A. Occupied

B. Occupying

C. To be absorbed

D. Absorbing

解析：形容词用法。固定词组be absorbed in忙于，致力于；本题是absorbed in…说明主语she的情况；句意：致力于写关于艾滋病预防的演讲稿，她没有时间去照顾生病的妈妈。故A正确。