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。